I tried to install Ruby 2.0. My command line urped and now looks like the following:
-bash: __git_ps1: command not found [11:58:28][whatever@whatever ~]$ >
Run the following:
$ curl -L https://raw.github.com/git/git/master/contrib/completion/git-prompt.sh > ~/.bash_git
And add this to the top of your ~/.bashrc:
~/.bashrc
source ~/.bash_git
Re-login to your shell and you should be set.