$ git clone -n https://gitee.com/gcdota930915/grub2.git /var/lib/mock/dist-an23-build-543470-86296/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-an23-build-543470-86296/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin bec6433936a71ce5e5ef6a554197658df343c552:KOJI_FETCH_HEAD
From https://gitee.com/gcdota930915/grub2
 * [new ref]         bec6433936a71ce5e5ef6a554197658df343c552 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bec6433 efi: Set NX memory attributes in kernel loaders to fix boot failure