$ git clone -n https://gitee.com/opencloudos-stream/rubygem-rspec-support.git /var/lib/mock/dist-ocs23-riscv-rva23-build-371153-46206/root/chroot_tmpdir/scmroot/rubygem-rspec-support
Cloning into '/var/lib/mock/dist-ocs23-riscv-rva23-build-371153-46206/root/chroot_tmpdir/scmroot/rubygem-rspec-support'...
$ git fetch origin rva23:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rubygem-rspec-support
 * [new branch]      rva23      -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 431af00 rubygem-rspec-support: enable bootstrap for initial rva23 build