Promoted Builds plugin should pass actual/"root" job to Git plublisher

The Promoted Builds plugin should pass the actual job instance to the Git Publisher perform() when performing post-promote action.

I wondered why publishing Git tags did not work as post promote action and debugged the code a bit.

The promotion will fail with

Promoting JOBNAME #13
failed build hudson.plugins.git.GitPublisher@7cdd86df SUCCESS
Finished: FAILURE

In the class GitPublisher I see build.getProject() returns a project instance pointing to the build and promote. the getScm() then will of course return a NullSCM. I think getProject() should return the base/actual job so that the Git publisher wil refer to the correct project.

A Git Publisher setup as post build action works quiet fine.