`trunk` not recognized as a default git branch with /review

What version of Codex CLI is running?

0.137.0

What subscription do you have?

Pro 20x

Which model were you using?

gpt-5.5

What platform is your computer?

macOS Darwin 25.5.0 arm64 arm

What terminal emulator and version are you using (if applicable)?

Ghostty

Codex doctor report

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}

What issue are you seeing?

On a repo where the default/main branch is called trunk, as opposed to master or main, the /review command does not auto-select it.

What steps can reproduce the bug?

Use the cli /review, hit enter to select option 1., see that trunk is not the default selection.

What is the expected behavior?

Ideally, the /review command auto-selects trunk when it is the default git branch, so the workflow of /review -> enter -> enter will do a review comparing the current branch to trunk, similar to how it works if the default branch is master or main.

Additional information

_No response_