Github Copilot Cloud with new Sandbox Environment commits with my user instead of Copilot

[fien002]

🏷️ Discussion Type

Bug

💬 Feature/Topic Area

Copilot Cloud Agent

Body

Hi,
I currently try out the new github Copilot Cloud Sandbox Sessions (this) and I really like them.
But I faced the problem, that all commits are created with my git user. These commits are not verified in github because the cloud sandbox does not have gpg signing key.

As our repository has the setting "Branch protection rules → Require signed commits" für our main branches, I cannot merge to them.

I found this article from april: https://github.blog/changelog/2026-04-03-copilot-cloud-agent-signs-its-commits/
But I think this was introduced for the Cloud Sessions running as github action.

How does it behave for Cloud Sandbox Environments?
Please let me know how to solve this problem - I wasn't able to get it working my self / with help of copilot & co

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[timrogers]

@fien002 Thanks for reaching out! I'm super glad to hear you like the new cloud sandboxes - it's great to be able to work in the cloud without sacrificing speed or flexibility 🏆

We're working on support for commit signing at the moment. We're currently testing that fix internally, and expect to ship it in the next two weeks, so all commits will be signed again. Watch this space 👀