Hi, over the last weeks (and especially yesterday/today) I've been working on a little script which goes through all the branches (except the master branch) and checks the last commit of each branch about whether it is an already merged script on gerrit. Previously it worked completely offline (and it is still available by using --offline) and was checking for each branch whether the change-id of the latest commit could be found as the change-id in the master branch. Now yesterday I discovered it is possible to query gerrit via SSH and get the data as JSON back so it now has an online mode (per default) and checks for each change-id if it's open. So this also covers now abandoned branches and also shows whether a branch has been even submitted. There is an advanced online mode (via --load-additional-data) which (after the first query) queries on the open changes if the branch is up to date. I was able to query all information in only one request so it's doing one (or with the additional information two) request(s) which take for 47 change-ids about 100 ms (according to the answer, but it feels longer, probably overhead of the SSH connection). By default it doesn't delete any branches but it's possible to also delete those branches automatically, only those beginning with review/ or asking for all of them. I'm planning on an automatic update (if request) if a branch could be updated. You can find the script in the following gist https://gist.github.com/xZise/975251c90e531347fee7 . It should work on any git repository, although the server/port are currently hardcoded (I might have an idea to fix that soon). I'm not sure how much energy I put in this in case if we are not staying with gerrit when the WMF does. But I originally didn't intent to grow it so “big”. Have fun with it, Fabian