fix: respect repo default branch #1270
Closed
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Description of bug
-When connecting a GitHub repo to Codex, setup fails with the error:
-Provided git ref master does not exist
Expected behavior
Codex should:
• Detect the repo’s actual default branch (usually main)
• Or allow selecting the desired Git ref during setup
• Or provide a more helpful error suggesting that master is missing
Additional context
GitHub changed the default branch from master to main in 2020. Many tools now use main as standard, and hardcoding a master ref leads to unnecessary setup failures.