$ git clone -n https://gitee.com/zhoujiajia111/grub2.git /var/lib/mock/dist-an23-build-453942-73610/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-an23-build-453942-73610/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin a0bce3ef2915ae71646aaab1473a5f8bf3e77bb4:KOJI_FETCH_HEAD
From https://gitee.com/zhoujiajia111/grub2
 * [new ref]         a0bce3ef2915ae71646aaab1473a5f8bf3e77bb4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0bce3e add fix