If I've already pushed my branch, typically I have a draft PR open and tests are being run against it, and I'm not going to force push, because that's obnoxious and I've probably prohibited it in the repo.

If it's a local commit and I catch it in ten seconds, I will sometimes throw up in my mouth a little bit as I amend the commit.

I view source control as one of the best places for an immutable log of events, and prefer immutable logs for many things in general, for a variety of reasons. So yes, I fix forward.