$ git clone -n https://src.fedoraproject.org/rpms/kdesdk-thumbnailers.git /var/lib/mock/f40-build-2381532-60448/root/chroot_tmpdir/scmroot/kdesdk-thumbnailers
Cloning into '/var/lib/mock/f40-build-2381532-60448/root/chroot_tmpdir/scmroot/kdesdk-thumbnailers'...
$ git fetch origin e1301ec32191147167de0fc11865e4b6c0058b46:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdesdk-thumbnailers
 * [new ref]         e1301ec32191147167de0fc11865e4b6c0058b46 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1301ec 24.01.95