Github/pullrequest action using merge.strategy: client with after: 0m — "Pull Request is not mergeable" error in clean stage after successful merge #9003

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

When using merge.strategy: client (with any after value that allows immediate merging, e.g. after: 0m), the action correctly creates and merges the pull request, but the run still ends with an error during the clean stage:

ERROR: Failed to clean up action(s): merging pull request: Pull Request is not mergeable
ERROR: - merging pull request: Pull Request is not mergeable
ERROR: cleaning action stage: "failed to clean up action(s):\n\tmerging pull request: Pull Request is not mergeable"

Expected Behavior

updatecli pipeline apply should create and merge the pull request with out any error

Steps To Reproduce

actions:
  myAction:
    kind: github/pullrequest
    scmID: myGithub
    spec:
      merge:
        strategy: client
        after: 0m

Run updatecli pipeline apply. The pull request is created and merged successfully, but the run exits with the error above.

Environment

- OS:Tested on macOS and GitHub action workflow using ubuntu
- updatecli: v0.117.1

Pipeline Graph

No response

OpenTelemetry Trace

No response

Anything else?

Looking through the code in pullrequest.go, it seems like the error is coming from CleanAction that calls mergeAfterDuration() on a PR that was already merged by CreateAction.