git single file

Sometimes you just need a single file from a git repo. I know that this is not the typical way we use git, but sometimes you just need to do a thing.
So I want a single file, how do i do that?

git archive --format=tar --remote=ssh://git@github.com:someuser/somefile.git{main} -- my_file_name |tar xf -

and like that you can snag one file from one repo and get on with your life.