$ git clone -n https://gitee.com/src-opencloudos-rpms/ceph.git /var/lib/mock/dist-oc9-build-251268-84088/root/chroot_tmpdir/scmroot/ceph
Cloning into '/var/lib/mock/dist-oc9-build-251268-84088/root/chroot_tmpdir/scmroot/ceph'...
$ git fetch origin 8df80e016f429edb02b2c4b64d3d01638dcb41f9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/ceph
 * [new ref]         8df80e016f429edb02b2c4b64d3d01638dcb41f9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8df80e0 import ceph-19.2.6-2.tl4