$ git clone -n https://gitee.com/src-opencloudos-rpms/grub2.git /var/lib/mock/dist-oc8-build-236062-82225/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-oc8-build-236062-82225/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin 052c197fcdc04aa5df46c319b178f326157a4a53:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/grub2
 * [new ref]         052c197fcdc04aa5df46c319b178f326157a4a53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 052c197 import grub2-2.02-170.tl3.1.ap.1