public function showCommit($ref)
    {
        $this->clearAll();

        $this->addCommandName(self::GIT_SHOW);
        $this->addCommandArgument('-s');
        $this->addCommandArgument('--pretty=raw');
        $this->addCommandArgument('--no-color');
        $this->addCommandSubject($ref);

        return $this->getCommand();
    }