How to count the geometry changes in Victoria for roads?

I’m trying to look at a specified period of time to see how often the geometry has changed on all roads in the state of Victoria using Overpass turbo.
Currently I am using adiff, but this only tells me the action type (e.g. modify, create or delete). The legend on achavi - Augmented OSM Change Viewer  [attic] shows that there’s a modified new geometry tag. Does anyone know how to access this or have any tips of what function I should be using?
Thanks!