To discard all local changes, you do not use revert. revert is for reverting commits. Instead, do:
$ git reset --hard
Of course, if you are like me, 7 microseconds after you enter that command you will remember something that you wish you hadn’t just deleted, so you might instead prefer to use:
$ git stash save 'Some changes'
which discards the changes from the working directory, but makes them retrievable.