$ git clone -n https://gitee.com/gcdota930915/grub2.git /var/lib/mock/dist-an23-build-543644-86332/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-an23-build-543644-86332/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin 723ed0679d6b3d6a71abeb24b381c3d1e7aa7359:KOJI_FETCH_HEAD
From https://gitee.com/gcdota930915/grub2
 * [new ref]         723ed0679d6b3d6a71abeb24b381c3d1e7aa7359 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 723ed06 efi: Set NX memory attributes in kernel loaders to fix boot failure