$ git clone -n https://gitee.com/opencloudos-stream/rr.git /var/lib/mock/dist-oc9-epol-build-227903-81184/root/chroot_tmpdir/scmroot/rr
Cloning into '/var/lib/mock/dist-oc9-epol-build-227903-81184/root/chroot_tmpdir/scmroot/rr'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rr
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b084a3a !2 fix err Merge pull request !2 from liujie/master