$ git clone -n https://gitee.com/src-opencloudos-rpms/grubby.git /var/lib/mock/dist-oc9-build-41497-14591/root/chroot_tmpdir/scmroot/grubby
Cloning into '/var/lib/mock/dist-oc9-build-41497-14591/root/chroot_tmpdir/scmroot/grubby'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/grubby
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a368731 import grubby-8.40-59.tl4