Restore file from git repo

I have a file that I messed up and not sure how to revert the changes back from the original git repo.  I have tried everything and not sure how to do this on PyCharm.  I ended up backing the files I needed, then deleting the project and starting from a clean pull of the repo.  I would like to figure out how to overwrite the local copy with the remote preferably on a file by file basis.  Since I am sure I will probably need this feature again. Is this possible?  If so how can I do this with PyCharm.  I know I can do this through the command line, but when I tried it it overwrote everything and delete the .idea and other directories used by JetBrains and that really messed me up.