API Groovy HttpPatch?

Up to personal preference at that point. It should work either way since you already have the object in memory. Technically, it’s a bit less efficient to do a PUT since you’re putting more data than what needs to be changed, but the PUT also doesn’t change anything if nothing needs to be changed. 

I personally would do PATCH because that way i know my code is only touching the thing i want to change (easier to tell what the code is changing). PUT is technically more idempotent.