$ git clone -n https://gitee.com/opencloudos-stream/rust.git /var/lib/mock/dist-ocs23-riscv-rva23-build-363193-44048/root/chroot_tmpdir/scmroot/rust
Cloning into '/var/lib/mock/dist-ocs23-riscv-rva23-build-363193-44048/root/chroot_tmpdir/scmroot/rust'...
$ git fetch origin rva23:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust
 * [new branch]      rva23      -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3a9aea Build from source after RISC-V bootstrap