$ git clone -n https://gitee.com/gcdota930915/grub2.git /var/lib/mock/dist-an23-build-550004-88793/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-an23-build-550004-88793/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin b342d9d28c225161435fffe3621c389ccb0f7a78:KOJI_FETCH_HEAD
From https://gitee.com/gcdota930915/grub2
 * [new ref]         b342d9d28c225161435fffe3621c389ccb0f7a78 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b342d9d debug: disable embedding tpcm_hygon in EFI core