I have written a little helper script that I use whenever I want to write code locally but run it remotely. This is for example useful when I cannot run the code locally because it needs one or more GPUs or is very computationally intensive.
One possibility would be to use git and push/pull each change manually. But this would obviously be too much effort for little changes (like typo fixes). Another alternative is to manually run rsync after each change. But as I am lazy, I want to run rsync automatically whenever any file in my project changes.