Cleans up outdated comments in the shared dev-infra Git utilities. We also export the Graphql client for consistency as we expose the `GithubClient` and `GitClient` too. PR Close #38656
Cleans up outdated comments in the shared dev-infra Git utilities. We also export the Graphql client for consistency as we expose the `GithubClient` and `GitClient` too. PR Close #38656