This song, I was trying to learn how to play it back when I was learning to play guitar. I’m making room by throwing away old papers and on a sheet among others I’ve found a transcription of the melody of the intro.
Here the transcription, rendered with lilypond.
I do not claim that it’s accurate. It is just what I’ve found written down on that now-trashed piece of paper (plus, I let lilypond add bars, which aren’t in the original transcription of mine).