I just tried about a dozen search engines. Nothing in terms of complete notation for the tune. But having played this song many years ago, and having watched Lennon play it (from archival film footage) I can tell you he uses very basic 3 note chords to shape his C, F, E, and other chords in the song.

The best I can do (maybe someone has better searching skills than I) is to provide you with a lead sheet transcription which I found. It has the melody and the chords. It's better than nothing and, it's free. You will need Adobe Acrobat Reader (free download) installed on your computer first, in order to view and print out this transcription.

Here is the link. Sorry I couldn't do more.