$ git clone -n https://gitee.com/src-opencloudos-rpms/setup.git /var/lib/mock/dist-oc8-build-236773-82325/root/chroot_tmpdir/scmroot/setup
Cloning into '/var/lib/mock/dist-oc8-build-236773-82325/root/chroot_tmpdir/scmroot/setup'...
$ git fetch origin oc8:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/setup
 * [new branch]      oc8        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aedf40c add opencloudos flag to /etc/motd