$ git clone -n https://gitee.com/opencloudos-stream/perl.git /var/lib/mock/dist-ocs23-riscv-rva23-build-331946-36064/root/chroot_tmpdir/scmroot/perl
Cloning into '/var/lib/mock/dist-ocs23-riscv-rva23-build-331946-36064/root/chroot_tmpdir/scmroot/perl'...
$ git fetch origin rva23:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/perl
 * [new branch]      rva23      -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 55c3a09 update to upstream perl 5.38.0 for riscv rva23