In your case, I would suggest going with submodules. However to answer your exact question, here's how you should proceed.
Start by creating
Jeremy/MyShooter
andJeremy/MyRPG
on Github. Keep them empty.Clone your origin project on your system, twice, giving it different names
$ git clone http://github.com/Bob/CoolFramework MyShooter $ git clone http://github.com/Bob/CoolFramework MyRPG
You now have 2 different local repos pointing to the same origin. You should remove the origin and point to yours as a remote:
$ cd MyShooter $ git remote remove origin $ git remote add origin http://github.com/Jeremy/MyShooter.git $ git push -u origin master
Don't forget to do the same for
MyRPG