What is your local to staging syncing strategy?

I'm developing a web app for one of the eCommerce app stores that require that ill have an active domain with SSL installed.
I found it more comfortable to own my own domain because I used Ngrok and they changing your domain so many times.

So right now my setup is: Local -> Staging VPS
I'm using ubuntu file explorer to do this connection and it's pretty slow and I wondering if there is better solution for linux?

I do not want to push to git every time that I want to upload changes.

I'm sure that there are solutions that people smarter then me think about already ;)