How use sample project without commiting everything to git

I want to use sample project like this one with git City Sample in UE Feature Samples - UE Marketplace
It’s quite large so what I did is put all static models etc in git ignore, and pushed Plugins, Source, Map, Materials and Blueprints.
After someone clones the project I expect a user to copy files from the sample to the local repository. And it works okay.
But when I duplicate a map and push it on another pc map appears empty.
What did I do wrong?