Occasionally I use it as a master clock (other times it’s Teletype).
I think I’ve read that it resets if you wait several seconds between clock pulses, but I could be wrong. I think when most people want it to “reset” they have this perceptual idea of a start point which might not be the actual start, so short of adding another control and a reset input to the module, there wouldn’t be a good way to do this anyhow (and it would only apply to Deja Vu with relatively tight settings).