The Git BuildData html snippet can be improved by adding hyperlinks to different pieces of information:
1. The revision can be a hyperlink to a diff
2. The repository could be a hyperlink even if ssh (JENKINS-75285)
3. Each ref can be a hyperlink

Items would only be hyperlinks if a git browser was setup. The git browser the each GitSCM
used would need to be persisted in the BuildData object.

Each GitRepositoryBrowser would need to implement a getRefLink method