use py3 branch of collective.MockMailHost

py3.cfg

@@ -128,7 +128,6 @@ auto-checkout +=
     Products.PortalTransforms
     Products.PythonScripts
     Products.ResourceRegistries
-    Products.ResourceRegistries
     Products.Sessions
     Products.SiteErrorLog
     Products.TemporaryFolder
@@ -306,7 +305,7 @@ ZServer                       = git ${remotes:zope}/ZServer.git
 Zope                          = git ${remotes:zope}/Zope.git                            pushurl=${remotes:zope_push}/Zope.git                           branch=xmlrpc
 # https://github.com/plone/borg.localrole/pull/9
 borg.localrole                = git ${remotes:plone}/borg.localrole.git                 pushurl=${remotes:plone_push}/borg.localrole.git                branch=python3
-collective.MockMailHost       = git ${remotes:collective}/collective.MockMailHost.git   pushurl=${remotes:collective_push}/collective.MockMailHost.git  branch=master
+collective.MockMailHost       = git ${remotes:collective}/collective.MockMailHost.git   pushurl=${remotes:collective_push}/collective.MockMailHost.git  branch=python3
 collective.monkeypatcher      = git ${remotes:plone}/collective.monkeypatcher.git       pushurl=${remotes:plone_push}/collective.monkeypatcher.git      branch=master
 collective.xmltestreport      = git ${remotes:collective}/collective.xmltestreport.git  pushurl=${remotes:collective_push}/collective.xmltestreport.git branch=gforcada-python3
 # https://github.com/zopefoundation/five.customerize/pull/4 (merged)