$ git clone -n https://src.fedoraproject.org/rpms/libmad.git /var/lib/mock/f40-build-2294571-56282/root/chroot_tmpdir/scmroot/libmad
Cloning into '/var/lib/mock/f40-build-2294571-56282/root/chroot_tmpdir/scmroot/libmad'...
$ git fetch origin 534968e0c41b533422d73e1759f1dd74f5c043df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmad
 * [new ref]         534968e0c41b533422d73e1759f1dd74f5c043df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 534968e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild