$ git clone -n https://gitee.com/fundawang/ceph.git /var/lib/mock/dist-an23-build-309861-67129/root/chroot_tmpdir/scmroot/ceph
Cloning into '/var/lib/mock/dist-an23-build-309861-67129/root/chroot_tmpdir/scmroot/ceph'...
$ git fetch origin 74dc6a1d87556fe97b2ec3448fe3e646d980b494:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/ceph
 * [new ref]         74dc6a1d87556fe97b2ec3448fe3e646d980b494 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74dc6a1 18.2.0