I'm not a revision control guru, but I've been using Git a lot more than Subversion in the last couple of years. Recently I found myself having to deal with a Subversion repository again. Stubbornly, I began to think about how to use the Subversion respository with Git. I had seen git-svn here and there (for example, I think apt recommends it when you install git-core), and I thought it might have the functionality that I was looking for. It turns out I was right; I now fail to understand why it took me so long to start using this most excellent tool. For those of you that are slow, like me, let me give you a small example of git-svn in action.
git svn clone http://svn.host/path local-repo-path
git svn rebase
git checkout -b bug-branch
git commit -a
git checkout master
git merge bug-branch
git svn dcommit
I'm just starting with this, so the above example probably has problems. If you want to try out something like this, google for "git svn workflow". Here's a nice one:
I'm not going to go into the advantages of using Git rather than Subversion, there are many. And now I can use Git while working with code in a Subversion repository!