This repo https://github.com/wikimedia/openzim is not the official openZIM one, but time to time people are opening tickets or PRs and I can not properly handle them. I can basically only reply to them... but not close the tickets/PRs. I'm the bug master for both openZIM and Kiwix projects and I would like to ask to get such rights on https://github.com/wikimedia/openzim too.
I have archive the openzim (related) projects on phabricator. So basically, what is needed on the mirror, is also to archive it there... whatever it means removal or close all tickets/PR (I have moved/merged them) and put the project in read-only.