Squashed merges and CI checks

[gtirloni]

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We have some CI checks that are required on a protected branch.

Developers submit PRs against the protected branch and can only either squash+merge or rebase if all CI checks pass. That's working as expected.

We discovered an issue with commits' email addresses. We have a CI check that verifies that email addresses are set to the proper @example.tld domain. That sometimes is being bypassed on squashes through the UI when users have configured their accounts to not expose their emails and use that @noreply.github.com address.

CI passes because it sees all the correct @example.tld commits in the branch. Then the user squash/merges all those commits into a single one through the UI and the final commits has @noreply.github.com, rendering the CI check essentially useless. Now our protected branch has "bad" commits.

Is this a situation others have faced before? Any workarounds or would this be a feature request of sorts?

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