Add only PHP code to the packagist.org composer package

We install apache/thrift PHP client library via composer (example: composer require apache/thrift:0.12) and after installing, we noticed that the entire apache/thrift git repo is there, along with all the C/C++, Go, Java, Python, and so on, code. Because composer and packagist are strictly a PHP thing, is it possible to strip out the unrelated items to the packagist deployment?