$ git clone -n https://gitee.com/opencloudos-stream/grub2.git /var/lib/mock/dist-ocs23-riscv-rva23-build-346705-38836/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-ocs23-riscv-rva23-build-346705-38836/root/chroot_tmpdir/scmroot/grub2'...
$ git fetch origin rva23:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/grub2
 * [new branch]      rva23      -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6cc9963  RISC-V specific compilation flags for riscv64 architecture