Normally you wouldn't track generated data in git; however we deliberately keep these resources under version control:

• schema.graphql is compared during upgrades, migrations and pull requests so you can see what has changed and ensure there’s no accidental GraphQL regressions
• schema.sql is kept for similar (but database) reasons, and to help you to ensure that all developers are running the same version of the database without accidental differences caused by faulty migration hygiene