I found some suggestions here, and show them below:
Clone your SVN repo:
Now add information about the branches:
git svn clone https://svnRepo/trunk/x/x/packageName packageName
Now fetch and create a local branch tied to the remote:
git config --add svn-remote.releaseNum.url https://svnRepo/branches/releaseNum/x/x/packageName/ git config --add svn-remote.releaseNum.fetch :refs/remotes/releaseNum/
From these two branches, you should be able to create normal Git branches, work and modify them, and then go back and merge changes, rebase, and dcommit as usual. Although I'm sure you could clone each of these into separate git repos, you would then lose the ability to do a diff between them. I hope this saves someone else from searching over the web for a couple of hours.
git svn fetch releaseNum git checkout -b local-releaseNum -t releaseNum
Originally posted on my Wiki.