As a developer, you can use an OCE Toolkit command to create an Oracle Content and Experience site from a template, keeping the same GUIDs for content.
Use the following OCE Toolkit command:
update create-site-from-template --reuse-content
This command creates a site in an Oracle Content and Experience server and preserves content IDs when creating the site. Preserving content IDs is necessary for multiple test to production runs to not end up with duplicate content items on a target server.