$ git clone -n https://src.fedoraproject.org/rpms/kf6-attica.git /var/lib/mock/f42-build-3352099-45014/root/chroot_tmpdir/scmroot/kf6-attica
Cloning into '/var/lib/mock/f42-build-3352099-45014/root/chroot_tmpdir/scmroot/kf6-attica'...
$ git fetch origin d4d55bfd7a393eb3fd1c8a5f3b2b220439266954:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-attica
 * [new ref]         d4d55bfd7a393eb3fd1c8a5f3b2b220439266954 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4d55bf 6.12.0