$ git clone -n https://gitee.com/yan1hcdc/grub2.git /var/lib/mock/dist-an23-build-540942-85119/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-an23-build-540942-85119/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin 6b81e97456e8bca7efbc70c4fd5c16322f529115:KOJI_FETCH_HEAD
From https://gitee.com/yan1hcdc/grub2
 * [new ref]         6b81e97456e8bca7efbc70c4fd5c16322f529115 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b81e97 fix build error against GCC 14