Please branch and build fonts-rpm-macros in epel10. If you do not wish to maintain fonts-rpm-macros in epel10, or do not think you will be able to do this in a timely manner, I would be happy to be a co-maintainer of the package (FAS: salimma); please add me through https://src.fedoraproject.org/rpms/fonts-rpm-macros/adduser
Package exists already in RHEL10 CRB repository.
submitted https://src.fedoraproject.org/rpms/adwaita-fonts/pull-request/1