git-rm-untracked.sh

#!/bin/zsh

autoload -Uz colors
colors

echo "  hash  | branch"
echo "--------+----------------------"
git branch -vv | grep gone | sed -E 's/ +/ /g' | cut -d ' ' -f 2,3 |
while read branch_name rev
do
  #echo "branch: ${fg[green]}${branch_name}${reset_color} revision: ${fg[green]}${rev}${reset_color}"
  printf "${fg[green]}%-8s${reset_color}| %s\n" "${rev}" "${branch_name}"
done
echo ""

echo -n "Are you okay to remove these branches? [y/N]: "
read RESULT
case $RESULT in
    [Yy])
        ;;
    *)
        exit 1
        ;;
esac

git branch -vv | grep gone | sed -E 's/ +/ /g' | cut -d ' ' -f 2,3 |
while read branch_name rev
do
  tag_name="archived__${branch_name}" 
  git tag ${tag_name} ${rev}
  git branch -D ${branch_name}
  echo "Created a tag: ${tag_name} (${rev})"
done