$ git clone -n https://gitee.com/pkm031/grub2.git /var/lib/mock/dist-an23-build-514109-75110/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-an23-build-514109-75110/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin d7cad9ca0817f1a070d1f99e66c759e2d0e6338f:KOJI_FETCH_HEAD
From https://gitee.com/pkm031/grub2
 * [new ref]         d7cad9ca0817f1a070d1f99e66c759e2d0e6338f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d7cad9c Fix grub2 relocation overflow error when booting on numa configurations