$ git clone -n https://gitee.com/src-opencloudos-rpms/opencloudos-rpm-config /var/lib/mock/dist-oc9-build-69410-47295/root/chroot_tmpdir/scmroot/opencloudos-rpm-config
Cloning into '/var/lib/mock/dist-oc9-build-69410-47295/root/chroot_tmpdir/scmroot/opencloudos-rpm-config'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/opencloudos-rpm-config
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d44df9 Rebuild