This utility is used to rename apps, which would allow you to quickly change app IDs to allow for upload them across multiple tenants?
https://www.npmjs.com/package/@collabco/myday-rename-app
This tool will change app ID, file and directory names, AngularJS modules, CSS classnames, etc. for you in one go.
Overall it would be best to use a pattern of {tenantalias}.appname, e.g. collabco.rssfeed and collabcotest.rssfeed for your test and production tenants, respectively.
In your case, you will be looking at executing a command like the following:
npx @collabco/myday-rename-app --path ./collabco.rssfeed --appId collabcotest.rssfeed