Add credentialsId to Git Parameter Plugin for authenticated branch/tag discovery

[MrGutJob]

What feature do you want to see added?

We use Git-based parameters in many Jenkins Pipelines (shared libraries, multibranch jobs) to let users select a branch/tag at build time. In our environment, these parameters often need to query private repositories/remotes where access depends on a specific Jenkins credential (different credentials per project/environment).

Previously this worked with list-git-branches-parameter-plugin because it allowed configuring an explicit credentialsId for branch/tag discovery. That plugin is no longer maintained, and we’re migrating to git-parameter-plugin, but it currently lacks a credentialsId option.

Request: please add an explicit credentialsId field to the Git Parameter definition and use it for remote operations when populating branches/tags/revisions. If not set, keep the current behavior for backward compatibility.

Upstream changes

This would enable migration from the unmaintained plugin that previously supported explicit credentials selection:
https://github.com/jenkinsci/list-git-branches-parameter-plugin

Are you interested in contributing this feature?

Not directly with code, but I can provide detailed logs, reproduction steps, and test builds in our Jenkins environment to validate the implementation.

[MarkEWaite]

I don't plan to add credentials support to the git parameter plugin.