$ git clone -n https://src.fedoraproject.org/rpms/smem.git /var/lib/mock/f40-build-2684249-67980/root/chroot_tmpdir/scmroot/smem
Cloning into '/var/lib/mock/f40-build-2684249-67980/root/chroot_tmpdir/scmroot/smem'...
$ git fetch origin 5121c0564c6e19f339b761f24f4a5ddfa542e000:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/smem
 * [new ref]         5121c0564c6e19f339b761f24f4a5ddfa542e000 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5121c05 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild