$ git clone -n https://src.fedoraproject.org/rpms/rubygem-public_suffix.git /var/lib/mock/f40-build-2323252-58704/root/chroot_tmpdir/scmroot/rubygem-public_suffix
Cloning into '/var/lib/mock/f40-build-2323252-58704/root/chroot_tmpdir/scmroot/rubygem-public_suffix'...
$ git fetch origin b57cfdb9780020d101d6f8237055b43db84d2a0d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-public_suffix
 * [new ref]         b57cfdb9780020d101d6f8237055b43db84d2a0d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b57cfdb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild