Reset phasor when click is detected at signal rate

Hey all,

I've been digging around a bit and I have a super simple question.

How do I reset a phasor when a signal goes from 0. to 1.?

I need the phasor to be going at a given frequency but reset intermittently by another signal. It must be done at signal rate which I am fairly certain rules out using the "phase" inlet.

I tried to build something with the gen~-phasor.maxpat example but my gen~ fu is not yet strong enough (I know I need to use expr but I can't quite figure it out).