path: root/Documentation/git-svn.txt

git-svn(1)
==========

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.
--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.
--username=<USER>;;
	For transports that SVN handles authentication for (http,
	https, and plain svn), specify the username.  For other
	transports (eg svn+ssh://), you must include the username in
	the URL, eg svn+ssh://foo@svn.bar.com/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 is useful if you wish to track multiple
	projects that share a common repository.
--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'.
--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/config file may be specified as an optional command-line
	argument.

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

--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.
+
[verse]
config key: svn-remote.<name>.ignore-paths
+
If the ignore-paths config 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)"
------------------------------------------------------------------------
--

--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 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.

'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.

'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.

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

'dcommit'::
	Commit each diff from a specified head 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.
	It is recommended that you run 'git svn' fetch and rebase (not
	pull or merge) your commits against the latest changes in the
	SVN repository.
	An optional revision or branch argument may be specified, and
	causes 'git svn' to do all work on that revision/branch
	instead of HEAD.
	This is advantageous over 'set-tree' (below) because it produces
	cleaner, more linear history.
+
--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.
+
[verse]
config key: svn-remote.<name>.commiturl
config key: svn.commiturl (overwrites all svn-remote.<name>.commiturl options)
+
Using this option for any other purpose (don't ask) is very strongly
discouraged.

'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;;
--destination;;
	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.  The value of this
	option must match one of the paths specified by a --branches (or
	--tags) option.  You can see these paths 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).

'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 copy 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.

'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.

'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 in .git/svn
	and remove $GIT_DIR/svn/<refname>index files in .git/svn.

'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.  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:
+
[verse]
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'.