git problem : fatal: Unable to write new index file

Question

I have an existing project that has been managed under git. I recently had to do a ground-up rebuild of the computer (OS X Snow Leopard), and returning to the project, git c

Answer 1

I'd like to point out one more cause of this error

If you are cloning a git repository that contains another git repository in it (not submodule), you will get this behaviour.

Hope it'll help somebody.