Switching repositories on the main page can leave the branch popup invalid

What version of Codex is running?

This is for https://chatgpt.com/codex

Which model were you using?

_No response_

What platform is your computer?

_No response_

What steps can reproduce the bug?

Go to https://chatgpt.com/codex
Choose a repository from the existing ones (1st popup menu)
Choose branch in 2nd popup (let's say 'master')
Choose another repository that does not have a master branch (i.e. 'main')
Now start your work and see it fail when it tries to checkout 'master' when there is only 'main' available.

Not a big deal but very easy to miss.

What is the expected behavior?

_No response_

What do you see instead?

_No response_

Additional information

_No response_