Delete stale branches on your machine

delete_stale_branches.sh

#!/bin/bash

# Update the local repository and prune remote-tracking branches
git fetch --prune

# Loop over each local branch and check if it has a remote tracking branch
for branch in $(git branch -vv | grep ': gone]' | awk '{print $1}'); do
    echo "Deleting local branch: $branch"
    git branch -d "$branch"
done