$ git clone -n https://gitee.com/opencloudos-stream/atlas.git /var/lib/mock/dist-ocs23-riscv-rva23-build-346327-38755/root/chroot_tmpdir/scmroot/atlas
Cloning into '/var/lib/mock/dist-ocs23-riscv-rva23-build-346327-38755/root/chroot_tmpdir/scmroot/atlas'...
$ git fetch origin rva23:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/atlas
 * [new branch]      rva23      -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2b7c2b riscv64: support riscv machine type