Not sure if that would be possible at all. PWA reads the manifest.json file to determine the PWA settings.
On the manifest.json file, you can find the scope
and start_url
properties.
This determines the starting point of the PWA app.
If you change the start_url
to any other URL, let's say a PlayStore Link, I am not sure if it will work as the play store domain is out of the scope of your own domain "xyz.com"