According to this article, it is treated as a request and often denied by the company. The target of the warrant did go to court to quash it, but that was already after Google declined to share the information.

https://www.washingtonpost.com/investigations/2026/02/03/hom...

edit: it appears that either 1. the Washington Post is printing misinformation, or 2. I have made a grave misinterpretation.