I was recently trying to figure out why one of our branches got disabled and no longer built, not even looking at `Jenkinsfile` presence, and I followed a wrong trail for very long

But in the end by chance found that the setup is to not process branches that also have PRs opened from them, and indeed someone made the PR

So got two questions:

1) I want a message telling why a branch was skipped! I sort of found where in github-branch-source-plugin code it begins "Checking branch" https://github.com/jenkinsci/github-branch-source-plugin/blob/master/src/main/java/org/jenkinsci/plugins/github_branch_source/GitHubSCMSource.java#L987
... and where it decides it is no good https://github.com/jenkinsci/github-branch-source-plugin/blob/master/src/main/java/org/jenkinsci/plugins/github_branch_source/BranchDiscoveryTrait.java#L230
...but a lot of java voodoo happens in-between, so I have no idea where to plug in such logging that it would end up on the branch indexing console

2) is there/can someone add some complex filter to always process branches from a certain name pattern (e.g. `release/*`), even if there are PRs from them?