When setting up an Azure Static WebApp when I chose GitHub as the source provider, the UI provides an option to choose from one of the existing branches. But once the app is created I don't see any option to change the source. Whereas in Azure "App Service", you can disconnect from GitHub and establish the connection again with a different branch.
So, Is it possible to change the source branch in Azure SWA?
You might've sorted it out by now, but this confused me as well and it turns out that you set this up on the deployment setup. In my case I'm using DevOps/Pipelines, and on the pipeline (equivalent to Github Actions) you can choose which branch to source from. Then you run the pipeline, and that will automatically change the source in the Static Web app.