Git Mirrors for GDB
GDB, as of November, 2012, still uses CVS as its main CSV. Apparently, there are no plans to change that, at least in the near future. However, it is possible to use git mirrors for development!
Here is a list of possible git mirrors that you can choose.
Sourceware's gdb.git: this is the "official" git mirror, directly for sourceware.org. However, it is read-only, so you will not be able to push local branches, commits and such. It is updated every 15 minutes.
Gitorious' gdb.git: this mirror is maintained by Sergio Durigan Junior <email@example.com>. If you have an account on gitorious, you will be able to fork this mirror and use it normally. You might prefer to do that, because that way you will have a mirror in which you can push things. The mirror is updated every 15 minutes.