How to update my Custom App only on remote server

Hello,

I am facing problem in updating my Custom App on remote server.

I have updated and pushed the changes on my local PC to GitHub and the process is completed successfully.

Now I want to update my Custom App only on remote server.

How can I update my Custom App only on remote server without affecting any other app that are already there like Frappe and ERPNext?

TIA

Yogi Yang