As you can see on the leaderboard of zelda alttp, the top players are glitching through the walls near the rivers. I've searched for atleast a hour to find any website which can explain how they do that. If any of you have a link where they explain what are the moves to do, please post it below.

You should ask in the ALTTP forum or go to their discord. http://www.speedrun.com/alttp/forum