$ git clone -n https://gitee.com/src-opencloudos-rpms/grub2.git /var/lib/mock/dist-oc8-build-120196-71054/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-oc8-build-120196-71054/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin f8b1626a3f1495a7f352e2189f366cf24d144750:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/grub2
 * [new ref]         f8b1626a3f1495a7f352e2189f366cf24d144750 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f8b1626 import grub2-2.02-158.tl3.ap.1