TFA says, "If you have a legitimate emergency, push it and get it reviewed later, ain’t no thang"

But, also, strive for a level of code quality that doesn't require that sort of thing.

We do code reviews for all committed code, but if there is an emergency in production, we deal with it the best way we can. If that means a quick fix put directly in production, we do it, but there is always a review the following day. Process is great until it isn't working - sometimes you have to side step it or even change it.