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PROGRAM:

NAME


git-svn - Bidirectional operation between a Subversion repository and Git

SYNOPSIS


git svn <command> [options] [arguments]

DESCRIPTION


git svn is a simple conduit for changesets between Subversion and Git. It provides a
bidirectional flow of changes between a Subversion and a Git repository.

git svn can track a standard Subversion repository, following the common
"trunk/branches/tags" layout, with the --stdlayout option. It can also follow branches and
tags in any layout with the -T/-t/-b options (see options to init below, and also the
clone command).

Once tracking a Subversion repository (with any of the above methods), the Git repository
can be updated from Subversion by the fetch command and Subversion updated from Git by the
dcommit command.

COMMANDS


init
Initializes an empty Git repository with additional metadata directories for git svn.
The Subversion URL may be specified as a command-line argument, or as full URL
arguments to -T/-t/-b. Optionally, the target directory to operate on can be specified
as a second argument. Normally this command initializes the current directory.

-T<trunk_subdir>, --trunk=<trunk_subdir>, -t<tags_subdir>, --tags=<tags_subdir>,
-b<branches_subdir>, --branches=<branches_subdir>, -s, --stdlayout
These are optional command-line options for init. Each of these flags can point to
a relative repository path (--tags=project/tags) or a full url
(--tags=https://foo.org/project/tags). You can specify more than one --tags and/or
--branches options, in case your Subversion repository places tags or branches
under multiple paths. The option --stdlayout is a shorthand way of setting
trunk,tags,branches as the relative paths, which is the Subversion default. If any
of the other options are given as well, they take precedence.

--no-metadata
Set the noMetadata option in the [svn-remote] config. This option is not
recommended, please read the svn.noMetadata section of this manpage before using
this option.

--use-svm-props
Set the useSvmProps option in the [svn-remote] config.

--use-svnsync-props
Set the useSvnsyncProps option in the [svn-remote] config.

--rewrite-root=<URL>
Set the rewriteRoot option in the [svn-remote] config.

--rewrite-uuid=<UUID>
Set the rewriteUUID option in the [svn-remote] config.

--username=<user>
For transports that SVN handles authentication for (http, https, and plain svn),
specify the username. For other transports (e.g. svn+ssh://), you must include
the username in the URL, e.g. svn+ssh://[email protected]/project

--prefix=<prefix>
This allows one to specify a prefix which is prepended to the names of remotes if
trunk/branches/tags are specified. The prefix does not automatically include a
trailing slash, so be sure you include one in the argument if that is what you
want. If --branches/-b is specified, the prefix must include a trailing slash.
Setting a prefix (with a trailing slash) is strongly encouraged in any case, as
your SVN-tracking refs will then be located at "refs/remotes/$prefix/", which is
compatible with Git’s own remote-tracking ref layout (refs/remotes/$remote/).
Setting a prefix is also useful if you wish to track multiple projects that share
a common repository. By default, the prefix is set to origin/.

Note
Before Git v2.0, the default prefix was "" (no prefix). This meant that
SVN-tracking refs were put at "refs/remotes/*", which is incompatible with how
Git’s own remote-tracking refs are organized. If you still want the old
default, you can get it by passing --prefix "" on the command line
(--prefix="" may not work if your Perl’s Getopt::Long is < v2.37).

--ignore-paths=<regex>
When passed to init or clone this regular expression will be preserved as a config
key. See fetch for a description of --ignore-paths.

--include-paths=<regex>
When passed to init or clone this regular expression will be preserved as a config
key. See fetch for a description of --include-paths.

--no-minimize-url
When tracking multiple directories (using --stdlayout, --branches, or --tags
options), git svn will attempt to connect to the root (or highest allowed level)
of the Subversion repository. This default allows better tracking of history if
entire projects are moved within a repository, but may cause issues on
repositories where read access restrictions are in place. Passing
--no-minimize-url will allow git svn to accept URLs as-is without attempting to
connect to a higher level directory. This option is off by default when only one
URL/branch is tracked (it would do little good).

fetch
Fetch unfetched revisions from the Subversion remote we are tracking. The name of the
[svn-remote "..."] section in the $GIT_DIR/config file may be specified as an optional
command-line argument.

This automatically updates the rev_map if needed (see $GIT_DIR/svn/**/.rev_map.* in
the FILES section below for details).

--localtime
Store Git commit times in the local time zone instead of UTC. This makes git log
(even without --date=local) show the same times that svn log would in the local
time zone.

This doesn’t interfere with interoperating with the Subversion repository you
cloned from, but if you wish for your local Git repository to be able to
interoperate with someone else’s local Git repository, either don’t use this
option or you should both use it in the same local time zone.

--parent
Fetch only from the SVN parent of the current HEAD.

--ignore-paths=<regex>
This allows one to specify a Perl regular expression that will cause skipping of
all matching paths from checkout from SVN. The --ignore-paths option should match
for every fetch (including automatic fetches due to clone, dcommit, rebase, etc)
on a given repository.

config key: svn-remote.<name>.ignore-paths

If the ignore-paths configuration key is set, and the command-line option is also
given, both regular expressions will be used.

Examples:

Skip "doc*" directory for every fetch

--ignore-paths="^doc"

Skip "branches" and "tags" of first level directories

--ignore-paths="^[^/]+/(?:branches|tags)"

--include-paths=<regex>
This allows one to specify a Perl regular expression that will cause the inclusion
of only matching paths from checkout from SVN. The --include-paths option should
match for every fetch (including automatic fetches due to clone, dcommit, rebase,
etc) on a given repository. --ignore-paths takes precedence over --include-paths.

config key: svn-remote.<name>.include-paths

--log-window-size=<n>
Fetch <n> log entries per request when scanning Subversion history. The default is
100. For very large Subversion repositories, larger values may be needed for
clone/fetch to complete in reasonable time. But overly large values may lead to
higher memory usage and request timeouts.

clone
Runs init and fetch. It will automatically create a directory based on the basename of
the URL passed to it; or if a second argument is passed; it will create a directory
and work within that. It accepts all arguments that the init and fetch commands
accept; with the exception of --fetch-all and --parent. After a repository is cloned,
the fetch command will be able to update revisions without affecting the working tree;
and the rebase command will be able to update the working tree with the latest
changes.

--preserve-empty-dirs
Create a placeholder file in the local Git repository for each empty directory
fetched from Subversion. This includes directories that become empty by removing
all entries in the Subversion repository (but not the directory itself). The
placeholder files are also tracked and removed when no longer necessary.

--placeholder-filename=<filename>
Set the name of placeholder files created by --preserve-empty-dirs. Default:
".gitignore"

rebase
This fetches revisions from the SVN parent of the current HEAD and rebases the current
(uncommitted to SVN) work against it.

This works similarly to svn update or git pull except that it preserves linear history
with git rebase instead of git merge for ease of dcommitting with git svn.

This accepts all options that git svn fetch and git rebase accept. However,
--fetch-all only fetches from the current [svn-remote], and not all [svn-remote]
definitions.

Like git rebase; this requires that the working tree be clean and have no uncommitted
changes.

This automatically updates the rev_map if needed (see $GIT_DIR/svn/**/.rev_map.* in
the FILES section below for details).

-l, --local
Do not fetch remotely; only run git rebase against the last fetched commit from
the upstream SVN.

dcommit
Commit each diff from the current branch directly to the SVN repository, and then
rebase or reset (depending on whether or not there is a diff between SVN and head).
This will create a revision in SVN for each commit in Git.

When an optional Git branch name (or a Git commit object name) is specified as an
argument, the subcommand works on the specified branch, not on the current branch.

Use of dcommit is preferred to set-tree (below).

--no-rebase
After committing, do not rebase or reset.

--commit-url <URL>
Commit to this SVN URL (the full path). This is intended to allow existing git svn
repositories created with one transport method (e.g. svn:// or http:// for
anonymous read) to be reused if a user is later given access to an alternate
transport method (e.g. svn+ssh:// or https://) for commit.

config key: svn-remote.<name>.commiturl
config key: svn.commiturl (overwrites all svn-remote.<name>.commiturl options)

Note that the SVN URL of the commiturl config key includes the SVN branch. If you
rather want to set the commit URL for an entire SVN repository use
svn-remote.<name>.pushurl instead.

Using this option for any other purpose (don’t ask) is very strongly discouraged.

--mergeinfo=<mergeinfo>
Add the given merge information during the dcommit (e.g.
--mergeinfo="/branches/foo:1-10"). All svn server versions can store this
information (as a property), and svn clients starting from version 1.5 can make
use of it. To specify merge information from multiple branches, use a single space
character between the branches (--mergeinfo="/branches/foo:1-10
/branches/bar:3,5-6,8")

config key: svn.pushmergeinfo

This option will cause git-svn to attempt to automatically populate the
svn:mergeinfo property in the SVN repository when possible. Currently, this can
only be done when dcommitting non-fast-forward merges where all parents but the
first have already been pushed into SVN.

--interactive
Ask the user to confirm that a patch set should actually be sent to SVN. For each
patch, one may answer "yes" (accept this patch), "no" (discard this patch), "all"
(accept all patches), or "quit".

git svn dcommit returns immediately if answer is "no" or "quit", without
committing anything to SVN.

branch
Create a branch in the SVN repository.

-m, --message
Allows to specify the commit message.

-t, --tag
Create a tag by using the tags_subdir instead of the branches_subdir specified
during git svn init.

-d<path>, --destination=<path>
If more than one --branches (or --tags) option was given to the init or clone
command, you must provide the location of the branch (or tag) you wish to create
in the SVN repository. <path> specifies which path to use to create the branch or
tag and should match the pattern on the left-hand side of one of the configured
branches or tags refspecs. You can see these refspecs with the commands

git config --get-all svn-remote.<name>.branches
git config --get-all svn-remote.<name>.tags

where <name> is the name of the SVN repository as specified by the -R option to
init (or "svn" by default).

--username
Specify the SVN username to perform the commit as. This option overrides the
username configuration property.

--commit-url
Use the specified URL to connect to the destination Subversion repository. This is
useful in cases where the source SVN repository is read-only. This option
overrides configuration property commiturl.

git config --get-all svn-remote.<name>.commiturl

--parents
Create parent folders. This parameter is equivalent to the parameter --parents on
svn cp commands and is useful for non-standard repository layouts.

tag
Create a tag in the SVN repository. This is a shorthand for branch -t.

log
This should make it easy to look up svn log messages when svn users refer to
-r/--revision numbers.

The following features from ‘svn log’ are supported:

-r <n>[:<n>], --revision=<n>[:<n>]
is supported, non-numeric args are not: HEAD, NEXT, BASE, PREV, etc ...

-v, --verbose
it’s not completely compatible with the --verbose output in svn log, but
reasonably close.

--limit=<n>
is NOT the same as --max-count, doesn’t count merged/excluded commits

--incremental
supported

New features:

--show-commit
shows the Git commit sha1, as well

--oneline
our version of --pretty=oneline

Note
SVN itself only stores times in UTC and nothing else. The regular svn client
converts the UTC time to the local time (or based on the TZ= environment). This
command has the same behaviour.
Any other arguments are passed directly to git log

blame
Show what revision and author last modified each line of a file. The output of this
mode is format-compatible with the output of ‘svn blame’ by default. Like the SVN
blame command, local uncommitted changes in the working tree are ignored; the version
of the file in the HEAD revision is annotated. Unknown arguments are passed directly
to git blame.

--git-format
Produce output in the same format as git blame, but with SVN revision numbers
instead of Git commit hashes. In this mode, changes that haven’t been committed to
SVN (including local working-copy edits) are shown as revision 0.

find-rev
When given an SVN revision number of the form rN, returns the corresponding Git commit
hash (this can optionally be followed by a tree-ish to specify which branch should be
searched). When given a tree-ish, returns the corresponding SVN revision number.

-B, --before
Don’t require an exact match if given an SVN revision, instead find the commit
corresponding to the state of the SVN repository (on the current branch) at the
specified revision.

-A, --after
Don’t require an exact match if given an SVN revision; if there is not an exact
match return the closest match searching forward in the history.

set-tree
You should consider using dcommit instead of this command. Commit specified commit or
tree objects to SVN. This relies on your imported fetch data being up-to-date. This
makes absolutely no attempts to do patching when committing to SVN, it simply
overwrites files with those specified in the tree or commit. All merging is assumed to
have taken place independently of git svn functions.

create-ignore
Recursively finds the svn:ignore property on directories and creates matching
.gitignore files. The resulting files are staged to be committed, but are not
committed. Use -r/--revision to refer to a specific revision.

show-ignore
Recursively finds and lists the svn:ignore property on directories. The output is
suitable for appending to the $GIT_DIR/info/exclude file.

mkdirs
Attempts to recreate empty directories that core Git cannot track based on information
in $GIT_DIR/svn/<refname>/unhandled.log files. Empty directories are automatically
recreated when using "git svn clone" and "git svn rebase", so "mkdirs" is intended for
use after commands like "git checkout" or "git reset". (See the
svn-remote.<name>.automkdirs config file option for more information.)

commit-diff
Commits the diff of two tree-ish arguments from the command-line. This command does
not rely on being inside an git svn init-ed repository. This command takes three
arguments, (a) the original tree to diff against, (b) the new tree result, (c) the URL
of the target Subversion repository. The final argument (URL) may be omitted if you
are working from a git svn-aware repository (that has been init-ed with git svn). The
-r<revision> option is required for this.

info
Shows information about a file or directory similar to what ‘svn info’ provides. Does
not currently support a -r/--revision argument. Use the --url option to output only
the value of the URL: field.

proplist
Lists the properties stored in the Subversion repository about a given file or
directory. Use -r/--revision to refer to a specific Subversion revision.

propget
Gets the Subversion property given as the first argument, for a file. A specific
revision can be specified with -r/--revision.

show-externals
Shows the Subversion externals. Use -r/--revision to specify a specific revision.

gc
Compress $GIT_DIR/svn/<refname>/unhandled.log files and remove
$GIT_DIR/svn/<refname>/index files.

reset
Undoes the effects of fetch back to the specified revision. This allows you to
re-fetch an SVN revision. Normally the contents of an SVN revision should never change
and reset should not be necessary. However, if SVN permissions change, or if you alter
your --ignore-paths option, a fetch may fail with "not found in commit" (file not
previously visible) or "checksum mismatch" (missed a modification). If the problem
file cannot be ignored forever (with --ignore-paths) the only way to repair the repo
is to use reset.

Only the rev_map and refs/remotes/git-svn are changed (see $GIT_DIR/svn/**/.rev_map.*
in the FILES section below for details). Follow reset with a fetch and then git reset
or git rebase to move local branches onto the new tree.

-r <n>, --revision=<n>
Specify the most recent revision to keep. All later revisions are discarded.

-p, --parent
Discard the specified revision as well, keeping the nearest parent instead.

Example:
Assume you have local changes in "master", but you need to refetch "r2".

r1---r2---r3 remotes/git-svn
\
A---B master

Fix the ignore-paths or SVN permissions problem that caused "r2" to be incomplete
in the first place. Then:

git svn reset -r2 -p
git svn fetch

r1---r2'--r3' remotes/git-svn
\
r2---r3---A---B master

Then fixup "master" with git rebase. Do NOT use git merge or your history will not
be compatible with a future dcommit!

git rebase --onto remotes/git-svn A^ master

r1---r2'--r3' remotes/git-svn
\
A'--B' master

OPTIONS


--shared[=(false|true|umask|group|all|world|everybody)], --template=<template_directory>
Only used with the init command. These are passed directly to git init.

-r <arg>, --revision <arg>
Used with the fetch command.

This allows revision ranges for partial/cauterized history to be supported. $NUMBER,
$NUMBER1:$NUMBER2 (numeric ranges), $NUMBER:HEAD, and BASE:$NUMBER are all supported.

This can allow you to make partial mirrors when running fetch; but is generally not
recommended because history will be skipped and lost.

-, --stdin
Only used with the set-tree command.

Read a list of commits from stdin and commit them in reverse order. Only the leading
sha1 is read from each line, so git rev-list --pretty=oneline output can be used.

--rmdir
Only used with the dcommit, set-tree and commit-diff commands.

Remove directories from the SVN tree if there are no files left behind. SVN can
version empty directories, and they are not removed by default if there are no files
left in them. Git cannot version empty directories. Enabling this flag will make the
commit to SVN act like Git.

config key: svn.rmdir

-e, --edit
Only used with the dcommit, set-tree and commit-diff commands.

Edit the commit message before committing to SVN. This is off by default for objects
that are commits, and forced on when committing tree objects.

config key: svn.edit

-l<num>, --find-copies-harder
Only used with the dcommit, set-tree and commit-diff commands.

They are both passed directly to git diff-tree; see git-diff-tree(1) for more
information.

config key: svn.l
config key: svn.findcopiesharder

-A<filename>, --authors-file=<filename>
Syntax is compatible with the file used by git cvsimport:

loginname = Joe User <[email protected]>

If this option is specified and git svn encounters an SVN committer name that does not
exist in the authors-file, git svn will abort operation. The user will then have to
add the appropriate entry. Re-running the previous git svn command after the
authors-file is modified should continue operation.

config key: svn.authorsfile

--authors-prog=<filename>
If this option is specified, for each SVN committer name that does not exist in the
authors file, the given file is executed with the committer name as the first
argument. The program is expected to return a single line of the form "Name <email>",
which will be treated as if included in the authors file.

-q, --quiet
Make git svn less verbose. Specify a second time to make it even less verbose.

-m, --merge, -s<strategy>, --strategy=<strategy>, -p, --preserve-merges
These are only used with the dcommit and rebase commands.

Passed directly to git rebase when using dcommit if a git reset cannot be used (see
dcommit).

-n, --dry-run
This can be used with the dcommit, rebase, branch and tag commands.

For dcommit, print out the series of Git arguments that would show which diffs would
be committed to SVN.

For rebase, display the local branch associated with the upstream svn repository
associated with the current branch and the URL of svn repository that will be fetched
from.

For branch and tag, display the urls that will be used for copying when creating the
branch or tag.

--use-log-author
When retrieving svn commits into Git (as part of fetch, rebase, or dcommit
operations), look for the first From: or Signed-off-by: line in the log message and
use that as the author string.

--add-author-from
When committing to svn from Git (as part of commit-diff, set-tree or dcommit
operations), if the existing log message doesn’t already have a From: or
Signed-off-by: line, append a From: line based on the Git commit’s author string. If
you use this, then --use-log-author will retrieve a valid author string for all
commits.

ADVANCED OPTIONS


-i<GIT_SVN_ID>, --id <GIT_SVN_ID>
This sets GIT_SVN_ID (instead of using the environment). This allows the user to
override the default refname to fetch from when tracking a single URL. The log and
dcommit commands no longer require this switch as an argument.

-R<remote name>, --svn-remote <remote name>
Specify the [svn-remote "<remote name>"] section to use, this allows SVN multiple
repositories to be tracked. Default: "svn"

--follow-parent
This option is only relevant if we are tracking branches (using one of the repository
layout options --trunk, --tags, --branches, --stdlayout). For each tracked branch, try
to find out where its revision was copied from, and set a suitable parent in the first
Git commit for the branch. This is especially helpful when we’re tracking a directory
that has been moved around within the repository. If this feature is disabled, the
branches created by git svn will all be linear and not share any history, meaning that
there will be no information on where branches were branched off or merged. However,
following long/convoluted histories can take a long time, so disabling this feature
may speed up the cloning process. This feature is enabled by default, use
--no-follow-parent to disable it.

config key: svn.followparent

CONFIG FILE-ONLY OPTIONS


svn.noMetadata, svn-remote.<name>.noMetadata
This gets rid of the git-svn-id: lines at the end of every commit.

This option can only be used for one-shot imports as git svn will not be able to fetch
again without metadata. Additionally, if you lose your $GIT_DIR/svn/**/.rev_map.*
files, git svn will not be able to rebuild them.

The git svn log command will not work on repositories using this, either. Using this
conflicts with the useSvmProps option for (hopefully) obvious reasons.

This option is NOT recommended as it makes it difficult to track down old references
to SVN revision numbers in existing documentation, bug reports and archives. If you
plan to eventually migrate from SVN to Git and are certain about dropping SVN history,
consider git-filter-branch(1) instead. filter-branch also allows reformatting of
metadata for ease-of-reading and rewriting authorship info for non-"svn.authorsFile"
users.

svn.useSvmProps, svn-remote.<name>.useSvmProps
This allows git svn to re-map repository URLs and UUIDs from mirrors created using
SVN::Mirror (or svk) for metadata.

If an SVN revision has a property, "svm:headrev", it is likely that the revision was
created by SVN::Mirror (also used by SVK). The property contains a repository UUID and
a revision. We want to make it look like we are mirroring the original URL, so
introduce a helper function that returns the original identity URL and UUID, and use
it when generating metadata in commit messages.

svn.useSvnsyncProps, svn-remote.<name>.useSvnsyncprops
Similar to the useSvmProps option; this is for users of the svnsync(1) command
distributed with SVN 1.4.x and later.

svn-remote.<name>.rewriteRoot
This allows users to create repositories from alternate URLs. For example, an
administrator could run git svn on the server locally (accessing via file://) but wish
to distribute the repository with a public http:// or svn:// URL in the metadata so
users of it will see the public URL.

svn-remote.<name>.rewriteUUID
Similar to the useSvmProps option; this is for users who need to remap the UUID
manually. This may be useful in situations where the original UUID is not available
via either useSvmProps or useSvnsyncProps.

svn-remote.<name>.pushurl
Similar to Git’s remote.<name>.pushurl, this key is designed to be used in cases where
url points to an SVN repository via a read-only transport, to provide an alternate
read/write transport. It is assumed that both keys point to the same repository.
Unlike commiturl, pushurl is a base path. If either commiturl or pushurl could be
used, commiturl takes precedence.

svn.brokenSymlinkWorkaround
This disables potentially expensive checks to workaround broken symlinks checked into
SVN by broken clients. Set this option to "false" if you track a SVN repository with
many empty blobs that are not symlinks. This option may be changed while git svn is
running and take effect on the next revision fetched. If unset, git svn assumes this
option to be "true".

svn.pathnameencoding
This instructs git svn to recode pathnames to a given encoding. It can be used by
windows users and by those who work in non-utf8 locales to avoid corrupted file names
with non-ASCII characters. Valid encodings are the ones supported by Perl’s Encode
module.

svn-remote.<name>.automkdirs
Normally, the "git svn clone" and "git svn rebase" commands attempt to recreate empty
directories that are in the Subversion repository. If this option is set to "false",
then empty directories will only be created if the "git svn mkdirs" command is run
explicitly. If unset, git svn assumes this option to be "true".

Since the noMetadata, rewriteRoot, rewriteUUID, useSvnsyncProps and useSvmProps options
all affect the metadata generated and used by git svn; they must be set in the
configuration file before any history is imported and these settings should never be
changed once they are set.

Additionally, only one of these options can be used per svn-remote section because they
affect the git-svn-id: metadata line, except for rewriteRoot and rewriteUUID which can be
used together.

BASIC EXAMPLES


Tracking and contributing to the trunk of a Subversion-managed project (ignoring tags and
branches):

# Clone a repo (like git clone):
git svn clone http://svn.example.com/project/trunk
# Enter the newly cloned directory:
cd trunk
# You should be on master branch, double-check with 'git branch'
git branch
# Do some work and commit locally to Git:
git commit ...
# Something is committed to SVN, rebase your local changes against the
# latest changes in SVN:
git svn rebase
# Now commit your changes (that were committed previously using Git) to SVN,
# as well as automatically updating your working HEAD:
git svn dcommit
# Append svn:ignore settings to the default Git exclude file:
git svn show-ignore >> .git/info/exclude

Tracking and contributing to an entire Subversion-managed project (complete with a trunk,
tags and branches):

# Clone a repo with standard SVN directory layout (like git clone):
git svn clone http://svn.example.com/project --stdlayout --prefix svn/
# Or, if the repo uses a non-standard directory layout:
git svn clone http://svn.example.com/project -T tr -b branch -t tag --prefix svn/
# View all branches and tags you have cloned:
git branch -r
# Create a new branch in SVN
git svn branch waldo
# Reset your master to trunk (or any other branch, replacing 'trunk'
# with the appropriate name):
git reset --hard svn/trunk
# You may only dcommit to one branch/tag/trunk at a time. The usage
# of dcommit/rebase/show-ignore should be the same as above.

The initial git svn clone can be quite time-consuming (especially for large Subversion
repositories). If multiple people (or one person with multiple machines) want to use git
svn to interact with the same Subversion repository, you can do the initial git svn clone
to a repository on a server and have each person clone that repository with git clone:

# Do the initial import on a server
ssh server "cd /pub && git svn clone http://svn.example.com/project [options...]"
# Clone locally - make sure the refs/remotes/ space matches the server
mkdir project
cd project
git init
git remote add origin server:/pub/project
git config --replace-all remote.origin.fetch '+refs/remotes/*:refs/remotes/*'
git fetch
# Prevent fetch/pull from remote Git server in the future,
# we only want to use git svn for future updates
git config --remove-section remote.origin
# Create a local branch from one of the branches just fetched
git checkout -b master FETCH_HEAD
# Initialize 'git svn' locally (be sure to use the same URL and
# --stdlayout/-T/-b/-t/--prefix options as were used on server)
git svn init http://svn.example.com/project [options...]
# Pull the latest changes from Subversion
git svn rebase

REBASE VS. PULL/MERGE


Prefer to use git svn rebase or git rebase, rather than git pull or git merge to
synchronize unintegrated commits with a git svn branch. Doing so will keep the history of
unintegrated commits linear with respect to the upstream SVN repository and allow the use
of the preferred git svn dcommit subcommand to push unintegrated commits back into SVN.

Originally, git svn recommended that developers pulled or merged from the git svn branch.
This was because the author favored git svn set-tree B to commit a single head rather than
the git svn set-tree A..B notation to commit multiple commits. Use of git pull or git
merge with git svn set-tree A..B will cause non-linear history to be flattened when
committing into SVN and this can lead to merge commits unexpectedly reversing previous
commits in SVN.

MERGE TRACKING


While git svn can track copy history (including branches and tags) for repositories
adopting a standard layout, it cannot yet represent merge history that happened inside git
back upstream to SVN users. Therefore it is advised that users keep history as linear as
possible inside Git to ease compatibility with SVN (see the CAVEATS section below).

HANDLING OF SVN BRANCHES


If git svn is configured to fetch branches (and --follow-branches is in effect), it
sometimes creates multiple Git branches for one SVN branch, where the additional branches
have names of the form branchname@nnn (with nnn an SVN revision number). These additional
branches are created if git svn cannot find a parent commit for the first commit in an SVN
branch, to connect the branch to the history of the other branches.

Normally, the first commit in an SVN branch consists of a copy operation. git svn will
read this commit to get the SVN revision the branch was created from. It will then try to
find the Git commit that corresponds to this SVN revision, and use that as the parent of
the branch. However, it is possible that there is no suitable Git commit to serve as
parent. This will happen, among other reasons, if the SVN branch is a copy of a revision
that was not fetched by git svn (e.g. because it is an old revision that was skipped with
--revision), or if in SVN a directory was copied that is not tracked by git svn (such as a
branch that is not tracked at all, or a subdirectory of a tracked branch). In these cases,
git svn will still create a Git branch, but instead of using an existing Git commit as the
parent of the branch, it will read the SVN history of the directory the branch was copied
from and create appropriate Git commits. This is indicated by the message "Initializing
parent: <branchname>".

Additionally, it will create a special branch named <branchname>@<SVN-Revision>, where
<SVN-Revision> is the SVN revision number the branch was copied from. This branch will
point to the newly created parent commit of the branch. If in SVN the branch was deleted
and later recreated from a different version, there will be multiple such branches with an
@.

Note that this may mean that multiple Git commits are created for a single SVN revision.

An example: in an SVN repository with a standard trunk/tags/branches layout, a directory
trunk/sub is created in r.100. In r.200, trunk/sub is branched by copying it to branches/.
git svn clone -s will then create a branch sub. It will also create new Git commits for
r.100 through r.199 and use these as the history of branch sub. Thus there will be two Git
commits for each revision from r.100 to r.199 (one containing trunk/, one containing
trunk/sub/). Finally, it will create a branch sub@200 pointing to the new parent commit of
branch sub (i.e. the commit for r.200 and trunk/sub/).

CAVEATS


For the sake of simplicity and interoperating with Subversion, it is recommended that all
git svn users clone, fetch and dcommit directly from the SVN server, and avoid all git
clone/pull/merge/push operations between Git repositories and branches. The recommended
method of exchanging code between Git branches and users is git format-patch and git am,
or just 'dcommit’ing to the SVN repository.

Running git merge or git pull is NOT recommended on a branch you plan to dcommit from
because Subversion users cannot see any merges you’ve made. Furthermore, if you merge or
pull from a Git branch that is a mirror of an SVN branch, dcommit may commit to the wrong
branch.

If you do merge, note the following rule: git svn dcommit will attempt to commit on top of
the SVN commit named in

git log --grep=^git-svn-id: --first-parent -1

You must therefore ensure that the most recent commit of the branch you want to dcommit to
is the first parent of the merge. Chaos will ensue otherwise, especially if the first
parent is an older commit on the same SVN branch.

git clone does not clone branches under the refs/remotes/ hierarchy or any git svn
metadata, or config. So repositories created and managed with using git svn should use
rsync for cloning, if cloning is to be done at all.

Since dcommit uses rebase internally, any Git branches you git push to before dcommit on
will require forcing an overwrite of the existing ref on the remote repository. This is
generally considered bad practice, see the git-push(1) documentation for details.

Do not use the --amend option of git-commit(1) on a change you’ve already dcommitted. It
is considered bad practice to --amend commits you’ve already pushed to a remote repository
for other users, and dcommit with SVN is analogous to that.

When cloning an SVN repository, if none of the options for describing the repository
layout is used (--trunk, --tags, --branches, --stdlayout), git svn clone will create a Git
repository with completely linear history, where branches and tags appear as separate
directories in the working copy. While this is the easiest way to get a copy of a complete
repository, for projects with many branches it will lead to a working copy many times
larger than just the trunk. Thus for projects using the standard directory structure
(trunk/branches/tags), it is recommended to clone with option --stdlayout. If the project
uses a non-standard structure, and/or if branches and tags are not required, it is easiest
to only clone one directory (typically trunk), without giving any repository layout
options. If the full history with branches and tags is required, the options --trunk /
--branches / --tags must be used.

When using multiple --branches or --tags, git svn does not automatically handle name
collisions (for example, if two branches from different paths have the same name, or if a
branch and a tag have the same name). In these cases, use init to set up your Git
repository then, before your first fetch, edit the $GIT_DIR/config file so that the
branches and tags are associated with different name spaces. For example:

branches = stable/*:refs/remotes/svn/stable/*
branches = debug/*:refs/remotes/svn/debug/*

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