Backport won't work after renaming the target branch for those Pull Requests targeting the old branch

[v1v]

Expected Behavior

Backport to happen

Actual Behavior

Backport won't happen

Steps to Reproduce the Problem

1. Merge a Pull Request
2. Rename the target branch
3. GitHub command with Mergifyio backport <branch>

Specifications

• Pull Request URL: Support running multiple log groups in cloudwatch input elastic/beats#29695
• Mergify Config URL: https://github.com/elastic/beats/blob/main/.mergify.yml
• Error -> Support running multiple log groups in cloudwatch input elastic/beats#29695 (comment)

Likely this is a corner case.

[sileht]

Not sure we can do anything about this, the pull request still references the old target branch even if it does not exist. There is no way for Mergify to known/understand the branch has been renamed or deleted.

[v1v]

I understand this is a kind of corner case, :( Thanks @sileht , I'll close this issue now