How do you clean up old branches automatically?

Old branches can clutter your repo. You can clean them locally and remotely.

Commands:

To delete merged branches locally:

git branch --merged main | grep -v "main" | xargs git branch -d

To prune deleted remote branches:

git fetch --prune

Example:

After several months, your repo has 50 old feature branches. You can prune them

automatically in CI or periodically with these commands.