Patch Request: Peter Gabriel - Growing up (Trent Reznor Remix) - Distorted lead

Hi all,
I am trying to understand how to recreate the weird "chirp" / distorted / scratching sound that starts to occur from 3:45:

Either in Syntorial or the Minifreak.

I don't even know where to start!

I have tried modulating distortion or a bit crusher with a square LFO. I have tried modulating the LFO with another LFO.

Help 😀