only one single repo per builder for now

templates/buildbot/master.cfg.j2

@@ -85,7 +85,8 @@ c['schedulers'].append(schedulers.ForceScheduler(
 {% set builder = buildbot_builders[builder_name] %}
 factory = util.BuildFactory()
 
-{% for repo in builder.repos %}
+{#{% for repo in builder.repos %}#}
+{% set repo = builder.repo %}
 {% if repo.type | default('github') == 'github' %}
 factory.addStep(steps.GitHub(
   name='{{repo.name}}',
@@ -100,12 +101,11 @@ name='{{repo.name}}',
 repourl='{{repo.repourl}}',
   mode='incremental',
   workdir='{{repo.workdir}}',
-  branch='{{repo.branch|default('master')}}',
   progress=True,
   logEnviron=False,
 ))
 {% endif %}
-{% endfor %}
+{#{% endfor %}#}
 
 {% for cmd in builder.shell_commands %}
 factory.addStep(steps.ShellCommand(