git-rb() {
  FW_GIT_URL=$1
  FW_GIT_BRANCH=""
  if [[ "$2" == */* ]]; then
    FW_GIT_REF="$2"
  else
    FW_GIT_BRANCH=$2
    FW_GIT_REF=refs/heads/"$FW_GIT_BRANCH"
  fi

  read -A results < <( git ls-remote "$FW_GIT_URL" "$2" )
  jq -n --arg url "$FW_GIT_URL" \
        --arg branch "$FW_GIT_BRANCH" \
        --arg hash "$results[1]" \
        --arg ref "$results[2]" \
     '{hash: $hash, ref: $ref, url: $url, branch: $branch}'
}