$ git clone -n https://src.fedoraproject.org/rpms/kdesdk-thumbnailers.git /var/lib/mock/f40-build-2670840-67359/root/chroot_tmpdir/scmroot/kdesdk-thumbnailers
Cloning into '/var/lib/mock/f40-build-2670840-67359/root/chroot_tmpdir/scmroot/kdesdk-thumbnailers'...
$ git fetch origin 47594d70c894cf9d11a89772f0fff48d996bfa70:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdesdk-thumbnailers
 * [new ref]         47594d70c894cf9d11a89772f0fff48d996bfa70 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 47594d7 24.02.1