$ git clone -n https://gitee.com/src-opencloudos-rpms/gcr.git /var/lib/mock/dist-oc9-build-63706-16463/root/chroot_tmpdir/scmroot/gcr
Cloning into '/var/lib/mock/dist-oc9-build-63706-16463/root/chroot_tmpdir/scmroot/gcr'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gcr
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c2ca97 import gcr-4.1.0-2.tl4