You can set the PACK_CONTENT_ENVIRONMENT and PUBLIC_PACK_CONTENT_ENVIRONMENT (both are required) environment variables to force the storefront to use a specific content environment outside of the Customizer, e.g. for a specific Github branch.

Preview Provider

in <PreviewProvider/> pass the contentEnvironment with the content environment handle you want to use.

<CartProvider>
  <ContextsProvider>
    <PreviewProvider
      customizerMeta={customizerMeta}
      isPreviewModeEnabled={isPreviewModeEnabled}
      siteSettings={siteSettings}
      contentEnvironment={ENV.PUBLIC_PACK_CONTENT_ENVIRONMENT}
    >
      <Layout key={`${locale.language}-${locale.country}`}>
        {children}
      </Layout>
    </PreviewProvider>
  </ContextsProvider>
</CartProvider>

Resources

Content Environments

Learn how to create and manage different versions of your content