The following article was written for an older version of Umbraco still works. Got a Umbraco 7.2.8 instance invalidating cache based on query string without any issue.
https://mattbrailsford.wordpress.com/2011/02/01/caching-an-umbraco-macro-by-querystring-parameter/
Thanks to Matt Brailsford for writing it up.
This article was originally written on Google's Blogger platform and ported to Hashnode on 17 Sep 2022.