Git command to remove branches without remote upstream

If you want to delete local branches that no longer have an upstream branch on the remote, you can use the following Git command

#!/bin/bash

# Fetch the latest information about remote branches
git fetch --all --prune

# List all local branches
for branch in $(git branch --format='%(refname:short)'); do
    # Check if the branch has a corresponding remote branch
    if ! git show-ref --verify --quiet refs/remotes/origin/"$branch"; then
        echo "Deleting branch: $branch"
        git branch -d "$branch"
    fi
done