How do I flush Craft's query cache so that I may query a relationship field again in the same web request with a new set of parameters? In this particular scenario, I need to handle it inside of a custom module so I need PHP and not Twig.
Yes, I am fully aware of cloning the original query in order to make a second query with modified parameters so do not mention that in your answer. It is not an option in this scenario and it does not answer my question.