"What the heck is Microsoft Go?"

> This repository produces a modified version of Go that can be used to build FIPS 140-2 compliant applications. Our goal is to share this implementation with others in the Go community who have the same requirement, and to merge this capability into upstream Go as soon as possible.

It is also the default 'golang' package on Azure Linux 3.0.

Microsoft Go fork: https://github.com/microsoft/go

Issue discussing FIPS implementation: https://github.com/golang/go/issues/69536