$ git clone -n https://src.fedoraproject.org/rpms/kf6-kxmlgui.git /var/lib/mock/f41-build-860316-168900/root/chroot_tmpdir/scmroot/kf6-kxmlgui
Cloning into '/var/lib/mock/f41-build-860316-168900/root/chroot_tmpdir/scmroot/kf6-kxmlgui'...
$ git fetch origin 49306ffc2b1e254b41cc7f617caf2da2a3e827fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kxmlgui
 * [new ref]         49306ffc2b1e254b41cc7f617caf2da2a3e827fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49306ff 6.7.0