git-finished.sh

#!/bin/bash
FEATURE=$(git branch --show-current)

if git show-ref --quiet refs/remotes/origin/main; then
    MAIN=main
elif git show-ref --quiet refs/remotes/origin/master; then
    MAIN=master
else
    echo "No main branch found" >&2
    exit 1
fi

if [ "$MAIN" = "$FEATURE" ]; then
    echo "Already on $MAIN" >&2
    exit 0
fi

git fetch origin --prune
git checkout $MAIN
git pull
git branch --delete $FEATURE