Show only amended modifications in pull request changes

Assuming I reviewed a PR with a lot of changes, but the developer rewrote the git history with --amend, is there any way to display only the file(s) modified in the amend commit? Actually it only show the entire changed file list.

If you still have the version of the commit before the amend, and nothing in between has been changed, you can compare the state of the repository before and after using git diff:

git diff COMMIT_BEFORE_AMEND..COMMIT_AFTER_AMEND

The point of amending commits is to change the history, so there is no built-in tracking of amend operations.