[aw] Test Copilot Push to Branch (No Sandbox) failed

### Workflow Failure

**Workflow:** [Test Copilot Push to Branch (No Sandbox)](https://github.com/githubnext/gh-aw-test/blob/main/.github/workflows/test-copilot-nosandbox-push-to-pull-request-branch.md)
**Branch:** main
**Run:** https://github.com/githubnext/gh-aw-test/actions/runs/34813125981

> [!WARNING]
> **Code Push Failed**: A code push safe output failed, and subsequent safe outputs were cancelled.

**Code Push Errors:**
- `push_to_pull_request_branch`: Branch test-pr-1789366881-25915-9216 no longer exists on origin (it may have been deleted), can't push to it.

### Action Required

**Assign this issue to an agent** to debug and fix the issue.

Debug with any coding agent

Use this prompt with any coding agent (GitHub Copilot, Claude, Gemini, etc.):

````
Debug the agentic workflow failure using https://raw.githubusercontent.com/github/gh-aw/main/debug.md

The failed workflow run is at https://github.com/githubnext/gh-aw-test/actions/runs/34813125981
````

Manually invoke the agent

Debug this workflow failure using your favorite Agent CLI and the `agentic-workflows` prompt.

- Start your agent
- Load the `agentic-workflows` skill from `.github/skills/agentic-workflows/SKILL.md` or
- Type `debug the agentic workflow test-copilot-nosandbox-push-to-pull-request-branch failure in https://github.com/githubnext/gh-aw-test/actions/runs/34813125981`

> [!TIP]
>
> Stop reporting this workflow as a failure
>
> To stop a workflow from creating failure issues, set `report-failure-as-issue: false` in its frontmatter:
> ```yaml
> safe-outputs:
> report-failure-as-issue: false
> ```
>
>

> Generated from [Test Copilot Push to Branch (No Sandbox)](https://github.com/githubnext/gh-aw-test/actions/runs/34813125981) · [◷](https://github.com/search?q=repo%3Agithubnext%2Fgh-aw-test+is%3Aissue+%22gh-aw-workflow-id%3A+test-copilot-nosandbox-push-to-pull-request-branch%22&type=issues)
> - [x] expires on Sep 21, 2026, 6:27 AM UTC

Start with the failed run and the workflow at .github/workflows/test-copilot-nosandbox-push-to-pull-request-branch.md. Read debug.md or .github/skills/agentic-workflows/SKILL.md, then trace why push_to_pull_request_branch targets a missing branch; done means the workflow completes without the reported code-push failure.

Written by the indexing model from the issue text.