Chris Cormack shared this useful trick for keeping track of what git repo you are currently using/editing. Stick it in your .bash_profile to have your prompt adapt to the repo you are in!

function parse_git_branch {
  ref=$(git-symbolic-ref HEAD 2> /dev/null) || return
  echo "("${ref#refs/heads/}")"
}

RED    ="\[\033[0;31m\]"
YELLOW ="\[\033[0;33m\]"
GREEN  ="\[\033[0;32m\]"

PS1="$RED\$(date +%H:%M) \w$YELLOW \$(parse_git_branch)$GREEN\$ "