Essentailly the problem reported in this issue: https://issues.jenkins-ci.org/browse/JENKINS-14711
We rely on the use of tags for years (stuck with cvs). We stopped updating jenkins (1.522) for a long time. But the plugins got too outdated. Since the upgrade in December 2014 the changes for our tag based builds are empty.
I've patched the cvs-plugin AbstractCvs to supply the necessary "-r" to the rlog command. This works nicely with the 1.520 that comes with the "mvn hpi:run" . The patch is not sufficient when running with 1.593, the Changes remain empty in that environment.
I understand from
JENKINS-14711 that the use of tags has been discarded by the maintainer. But we work this way for years. I'm willing the work on a patch but will need some help/guidance in that case.