git_current_branch vs. git_current_head

gistfile1.eclass

git_current_branch()
{
  git branch 2>/dev/null | awk '/^\* /{print $2}'
}

git_current_head()
{
  export BRANCH=`git branch 2>/dev/null | awk '/^\* /{print $2}'`
  if [[ $BRANCH = "(no" ]]; then
    export BRANCH=`git name-rev --name-only HEAD 2>/dev/null`
  fi
  echo $BRANCH
}