Working branch extraction for my zsh theme

gistfile1.bash

function git_prompt_info() {
  branch=`(git branch | grep '*' | awk '{print $2}') 2> /dev/null`
  if [ -z $branch ]; then
      return
  fi
  echo "$ZSH_THEME_GIT_PROMPT_PREFIX${ref#refs/heads/}$branch$ZSH_THEME_GIT_PROMPT_SUFFIX"
}