$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-mapclass.git /var/lib/mock/f38-build-side-42-init-devel-875008-28452/root/chroot_tmpdir/scmroot/gap-pkg-mapclass
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-875008-28452/root/chroot_tmpdir/scmroot/gap-pkg-mapclass'...
$ git fetch origin 58f950b254bf03d04e57ed61f5954f5bbbf60ee6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-mapclass
 * [new ref]         58f950b254bf03d04e57ed61f5954f5bbbf60ee6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58f950b Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild