Sharing here for awareness, I have created a post on Fedora Discussion to discuss a challenge we need to solve during EPEL 10.0 mass branching. Check out the post for more details, and please send your replies there instead of here on the mailing list.
https://discussion.fedoraproject.org/t/epel-10-0-mass-branching/144557
epel-devel@lists.fedoraproject.org