Sometimes, after some great releases (e some broken ones), it's hard to maintain our repo tidy.

To help you dealing with the messy you made creating branches e pushing them away, I found a short command line that remove all local branches that were already merged.

Open your terminal and paste the commando below:

git fetch --prune | git branch -r | awk '{print $1}' | egrep -v -f /dev/fd/0 <(git branch -vv | grep origin) | awk '{print $1}' | xargs git branch -D

It's also available as a Github Gist right here: https://gist.github.com/leandrocrs/428c956144b2b22738765d77e087a188.