$ git clone -n https://gitee.com/src-opencloudos-rpms/ceph.git /var/lib/mock/dist-oc9-build-251621-84129/root/chroot_tmpdir/scmroot/ceph
Cloning into '/var/lib/mock/dist-oc9-build-251621-84129/root/chroot_tmpdir/scmroot/ceph'...
$ git fetch origin 8317169c9039574a9c5eede7778d17f1f8df6a3d:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/ceph
 * [new ref]         8317169c9039574a9c5eede7778d17f1f8df6a3d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8317169 import ceph-19.2.6-2.1.tl4