How do I upload a zipped file to Posit Cloud without it automatically unzipping?

Question

I am trying to read a GTFS file in RStudioCloud. The function read_gtfs() from package {gtfstools} requires a zipped file as input. However, when I upload the zipped GTFS file to RStudioCloud, it automatically unzips and opens the file.

I can't find any button in RStudioCloud to disable automatic unzipping, or to zip the file again. How can I solve this?

Thank you for your help!