$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-nq.git /var/lib/mock/f39-build-1506901-35213/root/chroot_tmpdir/scmroot/gap-pkg-nq
Cloning into '/var/lib/mock/f39-build-1506901-35213/root/chroot_tmpdir/scmroot/gap-pkg-nq'...
$ git fetch origin f981ddc44da3c34b7a7e07ae81fae191b604b4a4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-nq
 * [new ref]         f981ddc44da3c34b7a7e07ae81fae191b604b4a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f981ddc Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild