$ git clone -n https://gitee.com/src-opencloudos-rpms/grub2.git /var/lib/mock/dist-oc8-build-215158-80830/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-oc8-build-215158-80830/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin 8ce6520c39d7a737f96358ec264466746d11bd2d:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/grub2
 * [new ref]         8ce6520c39d7a737f96358ec264466746d11bd2d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ce6520 import grub2-2.02-169.tl3.ap.1