$ git clone -n https://gitee.com/opencloudos-stream/moon-buggy.git /var/lib/mock/dist-oc9-epol-build-92992-59374/root/chroot_tmpdir/scmroot/moon-buggy
Cloning into '/var/lib/mock/dist-oc9-epol-build-92992-59374/root/chroot_tmpdir/scmroot/moon-buggy'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/moon-buggy
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e0882a2 update