$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-float.git /var/lib/mock/f38-build-side-42-init-devel-851436-28425/root/chroot_tmpdir/scmroot/gap-pkg-float
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-851436-28425/root/chroot_tmpdir/scmroot/gap-pkg-float'...
$ git fetch origin 6af0a5f03c789bbaa24f5afbbc0fd3bd395536b4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-float
 * [new ref]         6af0a5f03c789bbaa24f5afbbc0fd3bd395536b4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6af0a5f Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild