$ git clone -n https://gitee.com/src-opencloudos-rpms/ceph.git /var/lib/mock/dist-oc9-build-242035-82940/root/chroot_tmpdir/scmroot/ceph
Cloning into '/var/lib/mock/dist-oc9-build-242035-82940/root/chroot_tmpdir/scmroot/ceph'...
$ git fetch origin 91ec1339d16086c150b0e18079d2d60729b6626c:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/ceph
 * [new ref]         91ec1339d16086c150b0e18079d2d60729b6626c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91ec133 import ceph-18.2.8-1.tl4