If your PR has more than one commit, each one should be deployable in isolation. Which means you can split your giant PR into smaller ones that can be reviewed independently.
I’ve worked under both systems, but isn’t the purity you’re describing a bit of a dodge in that you wind up force pushing amended commits when you find you forgot something?
I’ve worked under both systems, but isn’t the purity you’re describing a bit of a dodge in that you wind up force pushing amended commits when you find you forgot something?