Helper script to delete local git branches which no longer exist on the remote.

cleanup_git_branches.sh

#!/bin/sh
git fetch -p
branches_with_gone_remote=$(
git for-each-ref --format '%(refname) %(upstream:track)' refs/heads |
	awk '$2 == "[gone]" {sub("refs/heads/", "", $1); print $1}'
)

for branch in ${branches_with_gone_remote}
do
	git branch -D $branch
done