Notebooks can't access files in a folder

[SnShine]

I am having issues in accessing data files stored like ../master/aima_data/example.txt through binder. All my notebooks are stored in ../master/.

From the binder instance, I can listdir() files and I can't see any files in ../master/aima_data although there are files in GitHub repo. I think that's not an issue per se. But, is there any way I can access those files from notebooks in binder instance.