Add .git_completion.sh to your home directory, and add this to your .bash_profile:
source ~/.git_completion.sh function parse_git_dirty { [[ $(git status 2> /dev/null | tail -n1) != "nothing to commit (working directory clean)" ]] && echo "*" } function parse_git_branch { git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/[\1$(parse_git_dirty)]/" } export PS1='\h:\W$(__git_ps1 "[\[\e[0;32m\]%s\[\e[0m\]\[\e[0;33m\]$(parse_git_dirty)\[\e[0m\]]")$ '