$ git clone -n https://gitee.com/opencloudos-stream/garcon.git /var/lib/mock/dist-oc9-epol-build-90879-59127/root/chroot_tmpdir/scmroot/garcon
Cloning into '/var/lib/mock/dist-oc9-epol-build-90879-59127/root/chroot_tmpdir/scmroot/garcon'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/garcon
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2609891 update