well, this is basically 5 minutes of the same riff, but the riff is awesome
e-----------------------------|
B-----------------------------|
G-----------------------------|
D-------5----------5-------5--|
A-------3----------3-------3--|
E--2222---2--2222---2222------|
[ Tab from: https://www.guitartabs.cc/tabs/b/buckethead/rivet_tab.html ]
I think the next part goes like this, but it's kind of hard to tell with all the screaming
e--------------------------------------------------|
B--------------------------------------------------|
G--------------------------------------------------|
D--------------------------------------------------|
A-------5t6-----------------------5t6--------------|
E--2t3-------5t6---7t8-------2t3------5t6---8t9----|