Question marks in Cyrillic file names about archive7z HOT 2 OPEN

class Archive7zRu extends Archive7z
{
    /**
     * Exit codes
     * 0 - Normal (no errors or warnings detected)
     * 1 - Warning (Non fatal error(s)). For example, some files cannot be read during compressing. So they were not compressed
     * 2 - Fatal error
     * 7 - Bad command line parameters
     * 8 - Not enough memory for operation
     * 255 - User stopped the process with control-C (or similar).
     *
     * @throws \Symfony\Component\Process\Exception\ProcessFailedException
     */
    protected function execute(Process $process): Process
    {
        $locale='ru_RU.UTF-8';
        $env = $process->getEnv();
        $env['LC_ALL'] = $locale;
        $process->setEnv($env);

        return $process->mustRun();
    }
}