Is this a common usage? While I’ve only attempted to use patch files with a Git GUI, they have always failed with errors 100% of the time for me.

Given that Git GUIs just invoke Git, I don’t have a lot of faith in it.

The only Git Gui I've used extensively is magit, and patch worked fine. It's very much like cherry picking commit or doing merge. There can be conflict so be sure to use `--3way` flag.

Copy-as-patch in Intellij is great.

Can easily apply minor changes, just sharing it over slack.