$ git clone -n https://gitee.com/src-opencloudos-rpms/grub2.git /var/lib/mock/dist-oc8-build-125003-74632/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-oc8-build-125003-74632/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin 84244aee8188ed97efc4f8bf2ac49e9171ab887d:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/grub2
 * [new ref]         84244aee8188ed97efc4f8bf2ac49e9171ab887d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84244ae import grub2-2.02-160.tl3.ap.1