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<title>git-svn(1)</title>
</head>
<body>
<div id="header">
<h1>
git-svn(1) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>git-svn -
bidirectional operation between a single Subversion branch and git
</p>
</div>
</div>
<h2>SYNOPSIS</h2>
<div class="sectionbody">
<p><em>git-svn</em> &lt;command&gt; [options] [arguments]</p>
</div>
<h2>DESCRIPTION</h2>
<div class="sectionbody">
<p>git-svn is a simple conduit for changesets between a single Subversion
branch and git. It is not to be confused with <a href="git-svnimport.html">git-svnimport(1)</a>.
They were designed with very different goals in mind.</p>
<p>git-svn is designed for an individual developer who wants a
bidirectional flow of changesets between a single branch in Subversion
and an arbitrary number of branches in git. git-svnimport is designed
for read-only operation on repositories that match a particular layout
(albeit the recommended one by SVN developers).</p>
<p>For importing svn, git-svnimport is potentially more powerful when
operating on repositories organized under the recommended
trunk/branch/tags structure, and should be faster, too.</p>
<p>git-svn mostly ignores the very limited view of branching that
Subversion has. This allows git-svn to be much easier to use,
especially on repositories that are not organized in a manner that
git-svnimport is designed for.</p>
</div>
<h2>COMMANDS</h2>
<div class="sectionbody">
<dl>
<dt>
<em>init</em>
</dt>
<dd>
<p>
Creates an empty git repository with additional metadata
directories for git-svn. The Subversion URL must be specified
as a command-line argument. Optionally, the target directory
to operate on can be specified as a second argument. Normally
this command initializes the current directory.
</p>
</dd>
<dt>
<em>fetch</em>
</dt>
<dd>
<p>
Fetch unfetched revisions from the Subversion URL we are
tracking. refs/remotes/git-svn will be updated to the
latest revision.
</p>
<p>Note: You should never attempt to modify the remotes/git-svn
branch outside of git-svn. Instead, create a branch from
remotes/git-svn and work on that branch. Use the <em>dcommit</em>
command (see below) to write git commits back to
remotes/git-svn.</p>
<p>See <em><a href="#fetch-args">Additional Fetch Arguments</a></em> if you are interested in
manually joining branches on commit.</p>
</dd>
<dt>
<em>dcommit</em>
</dt>
<dd>
<p>
Commit all diffs from the current HEAD directly to the SVN
repository, and then rebase or reset (depending on whether or
not there is a diff between SVN and HEAD). It is recommended
that you run git-svn fetch and rebase (not pull) your commits
against the latest changes in the SVN repository.
This is advantageous over <em>commit</em> (below) because it produces
cleaner, more linear history.
</p>
</dd>
<dt>
<em>log</em>
</dt>
<dd>
<p>
This should make it easy to look up svn log messages when svn
users refer to -r/--revision numbers.
</p>
<div class="literalblock">
<div class="content">
<pre><tt>The following features from `svn log' are supported:</tt></pre>
</div></div>
<div class="literalblock">
<div class="content">
<pre><tt>--revision=&lt;n&gt;[:&lt;n&gt;] - 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=&lt;n&gt; - is NOT the same as --max-count,
doesn't count merged/excluded commits
--incremental - supported</tt></pre>
</div></div>
<div class="literalblock">
<div class="content">
<pre><tt>New features:</tt></pre>
</div></div>
<div class="literalblock">
<div class="content">
<pre><tt>--show-commit - shows the git commit sha1, as well
--oneline - our version of --pretty=oneline</tt></pre>
</div></div>
<div class="literalblock">
<div class="content">
<pre><tt>Any other arguments are passed directly to `git log'</tt></pre>
</div></div>
</dd>
<dt>
<em>commit</em>
</dt>
<dd>
<p>
You should consider using <em>dcommit</em> 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.
</p>
</dd>
<dt>
<em>rebuild</em>
</dt>
<dd>
<p>
Not a part of daily usage, but this is a useful command if
you've just cloned a repository (using <a href="git-clone.html">git-clone(1)</a>) that was
tracked with git-svn. Unfortunately, git-clone does not clone
git-svn metadata and the svn working tree that git-svn uses for
its operations. This rebuilds the metadata so git-svn can
resume fetch operations. A Subversion URL may be optionally
specified at the command-line if the directory/repository you're
tracking has moved or changed protocols.
</p>
</dd>
<dt>
<em>show-ignore</em>
</dt>
<dd>
<p>
Recursively finds and lists the svn:ignore property on
directories. The output is suitable for appending to
the $GIT_DIR/info/exclude file.
</p>
</dd>
<dt>
<em>commit-diff</em>
</dt>
<dd>
<p>
Commits the diff of two tree-ish arguments from the
command-line. This command is intended for interopability with
git-svnimport and 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&lt;revision&gt; option is required for this.
</p>
</dd>
<dt>
<em>graft-branches</em>
</dt>
<dd>
<p>
This command attempts to detect merges/branches from already
imported history. Techniques used currently include regexes,
file copies, and tree-matches). This command generates (or
modifies) the $GIT_DIR/info/grafts file. This command is
considered experimental, and inherently flawed because
merge-tracking in SVN is inherently flawed and inconsistent
across different repositories.
</p>
</dd>
<dt>
<em>multi-init</em>
</dt>
<dd>
<p>
This command supports git-svnimport-like command-line syntax for
importing repositories that are layed out as recommended by the
SVN folks. This is a bit more tolerant than the git-svnimport
command-line syntax and doesn't require the user to figure out
where the repository URL ends and where the repository path
begins.
</p>
</dd>
<dt>
<em>multi-fetch</em>
</dt>
<dd>
<p>
This runs fetch on all known SVN branches we're tracking. This
will NOT discover new branches (unlike git-svnimport), so
multi-init will need to be re-run (it's idempotent).
</p>
</dd>
</dl>
</div>
<h2>OPTIONS</h2>
<div class="sectionbody">
<dl>
<dt>
--shared
</dt>
<dt>
--template=&lt;template_directory&gt;
</dt>
<dd>
<p>
Only used with the <em>init</em> command.
These are passed directly to <a href="git-init-db.html">git-init-db(1)</a>.
</p>
</dd>
<dt>
-r &lt;ARG&gt;
</dt>
<dt>
--revision &lt;ARG&gt;
</dt>
<dd>
<p>
Only used with the <em>fetch</em> command.
</p>
<p>Takes any valid -r&lt;argument&gt; svn would accept and passes it
directly to svn. -r&lt;ARG1&gt;:&lt;ARG2&gt; ranges and "{" DATE "}" syntax
is also supported. This is passed directly to svn, see svn
documentation for more details.</p>
<p>This can allow you to make partial mirrors when running fetch.</p>
</dd>
<dt>
-
</dt>
<dt>
--stdin
</dt>
<dd>
<p>
Only used with the <em>commit</em> command.
</p>
<p>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.</p>
</dd>
<dt>
--rmdir
</dt>
<dd>
<p>
Only used with the <em>dcommit</em>, <em>commit</em> and <em>commit-diff</em> commands.
</p>
<p>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.</p>
<p>repo-config key: svn.rmdir</p>
</dd>
<dt>
-e
</dt>
<dt>
--edit
</dt>
<dd>
<p>
Only used with the <em>dcommit</em>, <em>commit</em> and <em>commit-diff</em> commands.
</p>
<p>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.</p>
<p>repo-config key: svn.edit</p>
</dd>
<dt>
-l&lt;num&gt;
</dt>
<dt>
--find-copies-harder
</dt>
<dd>
<p>
Only used with the <em>dcommit</em>, <em>commit</em> and <em>commit-diff</em> commands.
</p>
<p>They are both passed directly to git-diff-tree see
<a href="git-diff-tree.html">git-diff-tree(1)</a> for more information.</p>
<div class="verseblock">
<div class="content">repo-config key: svn.l
repo-config key: svn.findcopiesharder</div></div>
</dd>
<dt>
-A&lt;filename&gt;
</dt>
<dt>
--authors-file=&lt;filename&gt;
</dt>
<dd>
<p>
Syntax is compatible with the files used by git-svnimport and
git-cvsimport:
</p>
<div class="listingblock">
<div class="content">
<pre><tt> loginname = Joe User &lt;user@example.com&gt;</tt></pre>
</div></div>
<p>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.</p>
<p>repo-config key: svn.authorsfile</p>
</dd>
<dt>
-q
</dt>
<dt>
--quiet
</dt>
<dd>
<p>
Make git-svn less verbose. This only affects git-svn if you
have the SVN::* libraries installed and are using them.
</p>
</dd>
<dt>
--repack[=&lt;n&gt;]
</dt>
<dd>
<p>
--repack-flags=&lt;flags&gt;
These should help keep disk usage sane for large fetches
with many revisions.
</p>
<div class="literalblock">
<div class="content">
<pre><tt>--repack takes an optional argument for the number of revisions
to fetch before repacking. This defaults to repacking every
1000 commits fetched if no argument is specified.</tt></pre>
</div></div>
<div class="literalblock">
<div class="content">
<pre><tt>--repack-flags are passed directly to gitlink:git-repack[1].</tt></pre>
</div></div>
<p>repo-config key: svn.repack
repo-config key: svn.repackflags</p>
</dd>
<dt>
-m
</dt>
<dt>
--merge
</dt>
<dt>
-s&lt;strategy&gt;
</dt>
<dt>
--strategy=&lt;strategy&gt;
</dt>
<dd>
<p>
These are only used with the <em>dcommit</em> command.
</p>
<p>Passed directly to git-rebase when using <em>dcommit</em> if a
<em>git-reset</em> cannot be used (see dcommit).</p>
</dd>
<dt>
-n
</dt>
<dt>
--dry-run
</dt>
<dd>
<p>
This is only used with the <em>dcommit</em> command.
</p>
<p>Print out the series of git arguments that would show
which diffs would be committed to SVN.</p>
</dd>
</dl>
</div>
<h2>ADVANCED OPTIONS</h2>
<div class="sectionbody">
<dl>
<dt>
-b&lt;refname&gt;
</dt>
<dt>
--branch &lt;refname&gt;
</dt>
<dd>
<p>
Used with <em>fetch</em>, <em>dcommit</em> or <em>commit</em>.
</p>
<p>This can be used to join arbitrary git branches to remotes/git-svn
on new commits where the tree object is equivalent.</p>
<p>When used with different GIT_SVN_ID values, tags and branches in
SVN can be tracked this way, as can some merges where the heads
end up having completely equivalent content. This can even be
used to track branches across multiple SVN _repositories_.</p>
<p>This option may be specified multiple times, once for each
branch.</p>
<p>repo-config key: svn.branch</p>
</dd>
<dt>
-i&lt;GIT_SVN_ID&gt;
</dt>
<dt>
--id &lt;GIT_SVN_ID&gt;
</dt>
<dd>
<p>
This sets GIT_SVN_ID (instead of using the environment). See the
section on
<em><a href="#tracking-multiple-repos">Tracking Multiple Repositories or Branches</a></em>
for more information on using GIT_SVN_ID.
</p>
</dd>
<dt>
--follow-parent
</dt>
<dd>
<p>
This is especially helpful when we're tracking a directory
that has been moved around within the repository, or if we
started tracking a branch and never tracked the trunk it was
descended from.
</p>
<div class="literalblock">
<div class="content">
<pre><tt>This relies on the SVN::* libraries to work.</tt></pre>
</div></div>
<p>repo-config key: svn.followparent</p>
</dd>
<dt>
--no-metadata
</dt>
<dd>
<p>
This gets rid of the git-svn-id: lines at the end of every commit.
</p>
<div class="literalblock">
<div class="content">
<pre><tt>With this, you lose the ability to use the rebuild command. If
you ever lose your .git/svn/git-svn/.rev_db file, you won't be
able to fetch again, either. This is fine for one-shot imports.</tt></pre>
</div></div>
<div class="literalblock">
<div class="content">
<pre><tt>The 'git-svn log' command will not work on repositories using this,
either.</tt></pre>
</div></div>
<p>repo-config key: svn.nometadata</p>
</dd>
</dl>
</div>
<h2>COMPATIBILITY OPTIONS</h2>
<div class="sectionbody">
<dl>
<dt>
--upgrade
</dt>
<dd>
<p>
Only used with the <em>rebuild</em> command.
</p>
<p>Run this if you used an old version of git-svn that used
"git-svn-HEAD" instead of "remotes/git-svn" as the branch
for tracking the remote.</p>
</dd>
<dt>
--no-ignore-externals
</dt>
<dd>
<p>
Only used with the <em>fetch</em> and <em>rebuild</em> command.
</p>
<p>This command has no effect when you are using the SVN::*
libraries with git, svn:externals are always avoided.</p>
<p>By default, git-svn passes --ignore-externals to svn to avoid
fetching svn:external trees into git. Pass this flag to enable
externals tracking directly via git.</p>
<p>Versions of svn that do not support --ignore-externals are
automatically detected and this flag will be automatically
enabled for them.</p>
<p>Otherwise, do not enable this flag unless you know what you're
doing.</p>
<p>repo-config key: svn.noignoreexternals</p>
</dd>
<dt>
--ignore-nodate
</dt>
<dd>
<p>
Only used with the <em>fetch</em> command.
</p>
<p>By default git-svn will crash if it tries to import a revision
from SVN which has <em>(no date)</em> listed as the date of the revision.
This is repository corruption on SVN's part, plain and simple.
But sometimes you really need those revisions anyway.</p>
<p>If supplied git-svn will convert <em>(no date)</em> entries to the UNIX
epoch (midnight on Jan. 1, 1970). Yes, that's probably very wrong.
SVN was very wrong.</p>
</dd>
</dl>
<h3>Basic Examples</h3>
<p>Tracking and contributing to a Subversion-managed project:</p>
<div class="listingblock">
<div class="content">
<pre><tt># Initialize a repo (like git init-db):
git-svn init http://svn.foo.org/project/trunk
# Fetch remote revisions:
git-svn fetch
# Create your own branch to hack on:
git checkout -b my-branch remotes/git-svn
# Do some work, and then commit your new changes to SVN, as well as
# automatically updating your working HEAD:
git-svn dcommit
# Something is committed to SVN, rebase the latest into your branch:
git-svn fetch &amp;&amp; git rebase remotes/git-svn
# Append svn:ignore settings to the default git exclude file:
git-svn show-ignore &gt;&gt; .git/info/exclude</tt></pre>
</div></div>
</div>
<h2>REBASE VS. PULL</h2>
<div class="sectionbody">
<p>Originally, git-svn recommended that the remotes/git-svn branch be
pulled from. This is because the author favored <em>git-svn commit B</em>
to commit a single head rather than the <em>git-svn commit A..B</em> notation
to commit multiple commits.</p>
<p>If you use <em>git-svn commit A..B</em> to commit several diffs and you do not
have the latest remotes/git-svn merged into my-branch, you should use
<em>git rebase</em> to update your work branch instead of <em>git pull</em>. <em>pull</em>
can cause non-linear history to be flattened when committing into SVN,
which can lead to merge commits reversing previous commits in SVN.</p>
</div>
<h2>DESIGN PHILOSOPHY</h2>
<div class="sectionbody">
<p>Merge tracking in Subversion is lacking and doing branched development
with Subversion is cumbersome as a result. git-svn does not do
automated merge/branch tracking by default and leaves it entirely up to
the user on the git side.</p>
</div>
<h2><a id="tracking-multiple-repos"></a>TRACKING MULTIPLE REPOSITORIES OR BRANCHES</h2>
<div class="sectionbody">
<p>Because git-svn does not care about relationships between different
branches or directories in a Subversion repository, git-svn has a simple
hack to allow it to track an arbitrary number of related _or_ unrelated
SVN repositories via one git repository. Simply use the --id/-i flag or
set the GIT_SVN_ID environment variable to a name other other than
"git-svn" (the default) and git-svn will ignore the contents of the
$GIT_DIR/svn/git-svn directory and instead do all of its work in
$GIT_DIR/svn/$GIT_SVN_ID for that invocation. The interface branch will
be remotes/$GIT_SVN_ID, instead of remotes/git-svn. Any
remotes/$GIT_SVN_ID branch should never be modified by the user outside
of git-svn commands.</p>
</div>
<h2><a id="fetch-args"></a>ADDITIONAL FETCH ARGUMENTS</h2>
<div class="sectionbody">
<p>This is for advanced users, most users should ignore this section.</p>
<p>Unfetched SVN revisions may be imported as children of existing commits
by specifying additional arguments to <em>fetch</em>. Additional parents may
optionally be specified in the form of sha1 hex sums at the
command-line. Unfetched SVN revisions may also be tied to particular
git commits with the following syntax:</p>
<div class="listingblock">
<div class="content">
<pre><tt> svn_revision_number=git_commit_sha1</tt></pre>
</div></div>
<p>This allows you to tie unfetched SVN revision 375 to your current HEAD:</p>
<div class="listingblock">
<div class="content">
<pre><tt> git-svn fetch 375=$(git-rev-parse HEAD)</tt></pre>
</div></div>
<h3>Advanced Example: Tracking a Reorganized Repository</h3>
<p>Note: this example is now obsolete if you have SVN::* libraries
installed. Simply use --follow-parent when fetching.</p>
<p>If you're tracking a directory that has moved, or otherwise been
branched or tagged off of another directory in the repository and you
care about the full history of the project, then you can read this
section.</p>
<p>This is how Yann Dirson tracked the trunk of the ufoai directory when
the /trunk directory of his repository was moved to /ufoai/trunk and
he needed to continue tracking /ufoai/trunk where /trunk left off.</p>
<div class="listingblock">
<div class="content">
<pre><tt> # This log message shows when the repository was reorganized:
r166 | ydirson | 2006-03-02 01:36:55 +0100 (Thu, 02 Mar 2006) | 1 line
Changed paths:
D /trunk
A /ufoai/trunk (from /trunk:165)
# First we start tracking the old revisions:
GIT_SVN_ID=git-oldsvn git-svn init \
https://svn.sourceforge.net/svnroot/ufoai/trunk
GIT_SVN_ID=git-oldsvn git-svn fetch -r1:165
# And now, we continue tracking the new revisions:
GIT_SVN_ID=git-newsvn git-svn init \
https://svn.sourceforge.net/svnroot/ufoai/ufoai/trunk
GIT_SVN_ID=git-newsvn git-svn fetch \
166=`git-rev-parse refs/remotes/git-oldsvn`</tt></pre>
</div></div>
</div>
<h2>BUGS</h2>
<div class="sectionbody">
<p>If you are not using the SVN::* Perl libraries and somebody commits a
conflicting changeset to SVN at a bad moment (right before you commit)
causing a conflict and your commit to fail, your svn working tree
($GIT_DIR/git-svn/tree) may be dirtied. The easiest thing to do is
probably just to rm -rf $GIT_DIR/git-svn/tree and run <em>rebuild</em>. You
can avoid this problem entirely by using <em>dcommit</em>.</p>
<p>We ignore all SVN properties except svn:executable. Too difficult to
map them since we rely heavily on git write-tree being _exactly_ the
same on both the SVN and git working trees and I prefer not to clutter
working trees with metadata files.</p>
<p>Renamed and copied directories are not detected by git and hence not
tracked when committing to SVN. I do not plan on adding support for
this as it's quite difficult and time-consuming to get working for all
the possible corner cases (git doesn't do it, either). Renamed and
copied files are fully supported if they're similar enough for git to
detect them.</p>
</div>
<h2>SEE ALSO</h2>
<div class="sectionbody">
<p><a href="git-rebase.html">git-rebase(1)</a></p>
</div>
<h2>Author</h2>
<div class="sectionbody">
<p>Written by Eric Wong &lt;normalperson@yhbt.net&gt;.</p>
</div>
<h2>Documentation</h2>
<div class="sectionbody">
<p>Written by Eric Wong &lt;normalperson@yhbt.net&gt;.</p>
</div>
<div id="footer">
<div id="footer-text">
Last updated 29-Nov-2006 07:59:33 UTC
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