diff --git a/zuul/merger/merger.py b/zuul/merger/merger.py
index ff6b682339..f150771fdc 100644
--- a/zuul/merger/merger.py
+++ b/zuul/merger/merger.py
@@ -195,7 +195,7 @@ class Merger(object):
         try:
             self.log.info("Updating local repository %s", project)
             repo.update()
-        except:
+        except Exception:
             self.log.exception("Unable to update %s", project)
 
     def _mergeChange(self, item, ref):
@@ -282,6 +282,12 @@ class Merger(object):
         recent = {}
         commit = None
         for item in items:
+            if item.get("number") and item.get("patchset"):
+                self.log.debug("Merging for change %s,%s." %
+                               (item["number"], item["patchset"]))
+            elif item.get("newrev") and item.get("oldrev"):
+                self.log.debug("Merging for rev %s with oldrev %s." %
+                               (item["newrev"], item["oldrev"]))
             commit = self._mergeItem(item, recent)
             if not commit:
                 return None
diff --git a/zuul/merger/server.py b/zuul/merger/server.py
index d8bc1b8f14..0d105f677c 100644
--- a/zuul/merger/server.py
+++ b/zuul/merger/server.py
@@ -90,8 +90,10 @@ class MergeServer(object):
                 job = self.worker.getJob()
                 try:
                     if job.name == 'merger:merge':
+                        self.log.debug("Got merge job.")
                         self.merge(job)
                     elif job.name == 'merger:update':
+                        self.log.debug("Got update job.")
                         self.update(job)
                     else:
                         self.log.error("Unable to handle job %s" % job.name)
diff --git a/zuul/scheduler.py b/zuul/scheduler.py
index ac9974057d..c941a98eea 100644
--- a/zuul/scheduler.py
+++ b/zuul/scheduler.py
@@ -1111,6 +1111,16 @@ class BasePipelineManager(object):
     def _makeMergerItem(self, item):
         # Create a dictionary with all info about the item needed by
         # the merger.
+        number = None
+        patchset = None
+        oldrev = None
+        newrev = None
+        if hasattr(item.change, 'number'):
+            number = item.change.number
+            patchset = item.change.patchset
+        elif hasattr(item.change, 'newrev'):
+            oldrev = item.change.oldrev
+            newrev = item.change.newrev
         return dict(project=item.change.project.name,
                     url=self.pipeline.trigger.getGitUrl(
                         item.change.project),
@@ -1118,6 +1128,10 @@ class BasePipelineManager(object):
                     refspec=item.change.refspec,
                     branch=item.change.branch,
                     ref=item.current_build_set.ref,
+                    number=number,
+                    patchset=patchset,
+                    oldrev=oldrev,
+                    newrev=newrev,
                     )
 
     def prepareRef(self, item):