Ok. My git repository is build in scm-manager. I install the plugin today. I grant only master to someone(AA) and no other branches. AA push the branch and shows that information in console. I had set the log level to TRACE.
Ok, i could reproduce the problem. If you push multiple changesets to multiple branches (with --all), then the branch information is available. But if you are doing a push for only one branch the information is missing. This is not a problem of the plugin, this is an issue in scm-manager. I will try to fix this.
Had you time to test the branchwp plugin with the scm-webapp-2012082901.war version?
The plugin center is not really open at the moment. Other developers could develop plugin for scm-manager, but i'm the only one who can publish plugins to the plugin center. This is for security reasons. Your plugin must be accessible through a public repository, because i've to look at your code and to check if the code is safe to use.