I just Git init'ed a repos with a wrong user, and want to undo it. Is there any command for this? Do I actually have to go in and edit the .git directory?
You can just delete .git. Typically:
rm -rf .git
Then, recreate as the right user.
In windows, type rmdir .git or rmdir /s .git if the .git folder has subfolders.
If your git shell isn't setup with proper administrative rights (i.e. it denies you when you try to rmdir), you can open a command prompt (possibly as administrator--hit the windows key, type 'cmd', right click 'command prompt' and select 'run as administrator) and try the same commands.
rd is an alternative form of the rmdir command. http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/rmdir.mspx?mfr=true
Git keeps all of its files in the .git directory. Just remove that one and init again.
This post well show you how to find the hide .git file on Windows, Mac OSX, Ubuntu
I'm running Windows 7 with git bash console. The above commands wouldn't work for me.
So I did it via Windows Explorer. I checked show hidden files, went to my projects directory and manually deleted the .git folder. Then back in the command line I checked by running git status.
Which returned...
fatal: Not a git repository (or any of the parent directories): .git
Which is exactly the result I wanted. It returned that the directory is not a git repository (anymore!).
remove the .git folder in your project root folder
if you installed submodules and want to remove their git, also remove .git from submodules folders
来源：https://stackoverflow.com/questions/3212459/is-there-a-command-to-undo-git-init