$ git clone -n https://gitee.com/src-opencloudos-rpms/grub2 /var/lib/mock/dist-oc8-build-26610-7526/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-oc8-build-26610-7526/root/chroot_tmpdir/scmroot/grub2'...
$ git reset --hard 2ead6a23cdcd653a36d219c7fe1b168a07c3cf19
HEAD is now at 2ead6a2 fix patches for oc