--diff option do not compare changes from provided branch

[nkzx]

Pint Version

1.21.1

PHP Version

8.3.1

Description

I am experiencing an issue with the --diff option.

Despite the fix provided in https://github.com/laravel/pint/releases/tag/v1.21.0, the issue is still producing and provide this :

I tried to run command in local environment and in a github action, same effect. removing the option preset does not change the output.

Steps To Reproduce

pint --diff=main --preset laravel

[github-actions]

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