Help locating SketchBLEU implementation for comparing two repos

[StwayneXG]

I am trying to use SketchBLEU as described in the paper, but I am having trouble navigating the repository and distinguishing which files correspond to SketchBLEU versus other parts of the work.

My use case is to compute the SketchBLEU score between two repositories (either different commit IDs of the same repo or two separate repo paths). At the moment, I can’t find a clear implementation that takes two repo paths and outputs a SketchBLEU score.

Could you point me to the correct implementation, or provide a baseline script that computes the SketchBLEU score between two repos?