$ git clone -n https://gitee.com/src-opencloudos-rpms/grub2.git /var/lib/mock/dist-oc8-build-246168-83442/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-oc8-build-246168-83442/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin 3198e41d6d8c3bb06086809bb060e14040c8b67c:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/grub2
 * [new ref]         3198e41d6d8c3bb06086809bb060e14040c8b67c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3198e41 import grub2-2.02-170.tl3.3.ap.1