$ git clone -n https://gitee.com/src-opencloudos-rpms/ceph.git /var/lib/mock/dist-oc9-pre-build-238574-82542/root/chroot_tmpdir/scmroot/ceph
Cloning into '/var/lib/mock/dist-oc9-pre-build-238574-82542/root/chroot_tmpdir/scmroot/ceph'...
$ git fetch origin a4acdd42b145b45a19c67284bcf28f72c777167c:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/ceph
 * [new ref]         a4acdd42b145b45a19c67284bcf28f72c777167c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a4acdd4 import ceph-18.2.0-17.tl4