I created a new build with multiple Git repositories ( Not Multi-SCM ).
I set the advanced name setting for each repository.
I am able to build from first Git repo, and upon success push to second Git repo using 'Git Publisher'. I am getting error from the notifier plugin during the build process. It would be helpful to have an option in the plugin to choose which repository to notify.

Stack trace output:

Bitbucket notify on start failed: None or multiple repos
java.lang.Exception: None or multiple repos
at org.jenkinsci.plugins.bitbucket.scm.GitScmAdapter.getCommitRepoMap(GitScmAdapter.java:53)
at org.jenkinsci.plugins.bitbucket.BitbucketBuildStatusHelper.createBuildStatusResources(BitbucketBuildStatusHelper.java:87)
at org.jenkinsci.plugins.bitbucket.BitbucketBuildStatusHelper.createBuildStatusResources(BitbucketBuildStatusHelper.java:144)
at org.jenkinsci.plugins.bitbucket.BitbucketBuildStatusHelper.notifyBuildStatus(BitbucketBuildStatusHelper.java:231)
at org.jenkinsci.plugins.bitbucket.BitbucketBuildStatusHelper.notifyBuildStatus(BitbucketBuildStatusHelper.java:224)
at org.jenkinsci.plugins.bitbucket.BitbucketBuildStatusNotifier.prebuild(BitbucketBuildStatusNotifier.java:109)
at hudson.model.AbstractBuild$AbstractBuildExecution.preBuild(AbstractBuild.java:834)
at hudson.model.AbstractBuild$AbstractBuildExecution.preBuild(AbstractBuild.java:829)
at hudson.model.Build$BuildExecution.doRun(Build.java:144)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:534)
at hudson.model.Run.execute(Run.java:1728)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:98)
at hudson.model.Executor.run(Executor.java:404)