Han shot first. If you want to see it, you'll have to track down a very early VHS release (from 1984?) or from pirates. Every other official release has been revised for Lucas's change of heart.
Of course, this exists: <https://en.wikipedia.org/w/index.php?title=Harmy%27s_Despeci...>
But, to another point, copyright is a convenient bogeyman in these discussions--and it plays a role. But someone would also need to pay for archiving all this material and indexing it in a manner that would actually be useful.
More specifically, Greedo didn't shoot at all. Not until it was messed with many years later.