git-svn is a simple conduit for changesets between Subversion and git.
It is designed for developers who wish to contribute to projects that use Subversion, but would rather be using git.
You can find it in the official git repository at: git://git.kernel.org/pub/scm/git/git.git http://kernel.org/pub/scm/git/git.git
More information is available in the manual page