He's not actually talking about saving the diff and patching within a git repo, as far as I can gather from:
> [...], apply the changes (patch) from the file and continue the work. While it is not something difficult, it can be done much easier with Git.
Since he's saying "it can be done much easier with Git", the implication is that he wasn't using Git earlier, and the workflow with `git stash` is far cleaner than that diff/patch workflow.
At least, I think that's the case. I really can't imagine someone doing that instead of just using Git and `git stash` in the first place.
> [...], apply the changes (patch) from the file and continue the work. While it is not something difficult, it can be done much easier with Git.
Since he's saying "it can be done much easier with Git", the implication is that he wasn't using Git earlier, and the workflow with `git stash` is far cleaner than that diff/patch workflow.
At least, I think that's the case. I really can't imagine someone doing that instead of just using Git and `git stash` in the first place.