Sign commits from batch changes

Created by: Crevil

Question description

Is it possible to have signed commits from campaigns?

As I understand the campaign setup is that changes and PRs are created with the personal access token of the GitHub integration setup. It would be great if we could some how add a signing key as well.

Is your question related to a problem? If so, please describe or link to another issue.

We require all changes to our repositories to be signed by the author. This is enforced with branch protection rules in GitHub and so, when we run a campaign against our private repositories we still have to rebase the PR branches manually to sign them before they can get merged.

Additional context

We are running sourcegraph on Kubernetes so if there is an option that I missed in the documentation please let me know. :)