[dilyevsky]

In the context of Github PR you can’t leave reviews on commits other than what’s currently the tip commit of the pr branch so structuring this way is just wasted effort.

What you should be doing is breaking down PRs more finely so that your unrelated refactors are all separate single-commit PRs. That ofc requires that your pr review round trip time is fast

[lolinder]

I'm pretty sure I've left comments on a commit before in a GitHub PR. The comment just goes in the right place in the PR diff, assuming no changes, or comments can actually be attached to commits themselves (which is what happens when a comment becomes stale—it retains a reference to the original commit).