Good stuff, migration is at the end and whole RichFaces SVN trunk and build modules was migrated to the GitHub repositories following RichFaces Git Migration Plan!
Also appropriate documentation was updated to follow new repository structure:
The migration will follow soon with repositories that are not part of core framework, it covers Sandbox repository, QA projects and Docs.
We will also work on creating contribution process more readable, but you can start already forking repos either to your personal GitHub repositories or locally - and we be happy to see some contributions in form of pull requests.
It's a while I have announced that migration is to be started and SVN was going to be locked.
Now everything related to framework is migrated to Git and opened for further work! 
During this period, we have migrated RichFaces framework 4.x history,
reformatted complete source code with JBoss Community formatters,
re-thought the workflow which is now much more aligned with Git
and compiled the guide for contributors for managing pull requests.
From me, the last one is necessary: Let's enjoy hacking with RichFaces. ;-)