$ git clone -n https://gitee.com/src-opencloudos-rpms/grub2.git /var/lib/mock/dist-oc9-build-125036-74671/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-oc9-build-125036-74671/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin 605d58c91b36cd5817f556ba5a6f5abf9606adbc:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/grub2
 * [new ref]         605d58c91b36cd5817f556ba5a6f5abf9606adbc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 605d58c import grub2-2.12-13.tl4.ap.1