$ git clone -n https://gitee.com/opencloudos-stream/opencloudos-rpm-config.git /var/lib/mock/dist-ocs23-riscv-rva23-build-361875-43245/root/chroot_tmpdir/scmroot/opencloudos-rpm-config
Cloning into '/var/lib/mock/dist-ocs23-riscv-rva23-build-361875-43245/root/chroot_tmpdir/scmroot/opencloudos-rpm-config'...
$ git fetch origin rva23:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/opencloudos-rpm-config
 * [new branch]      rva23      -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6733957 riscv64: restrict -march=rva23u64 to gcc toolchain only in optflags