diff --git a/mercurial/bundle2.py b/mercurial/bundle2.py
--- a/mercurial/bundle2.py
+++ b/mercurial/bundle2.py
@@ -353,7 +353,7 @@
         return processbundle(repo, unbundler, lambda: tr, source=source)
     else:
         # the transactiongetter won't be used, but we might as well set it
-        op = bundleoperation(repo, lambda: tr)
+        op = bundleoperation(repo, lambda: tr, source=source)
         _processchangegroup(op, unbundler, tr, source, url, **kwargs)
         return op
 
@@ -441,7 +441,7 @@
     if op is None:
         if transactiongetter is None:
             transactiongetter = _notransaction
-        op = bundleoperation(repo, transactiongetter)
+        op = bundleoperation(repo, transactiongetter, source=source)
     # todo:
     # - replace this is a init function soon.
     # - exception catching
diff --git a/mercurial/exchange.py b/mercurial/exchange.py
--- a/mercurial/exchange.py
+++ b/mercurial/exchange.py
@@ -1595,7 +1595,8 @@
     _pullbundle2extraprepare(pullop, kwargs)
     bundle = pullop.remote.getbundle('pull', **pycompat.strkwargs(kwargs))
     try:
-        op = bundle2.bundleoperation(pullop.repo, pullop.gettransaction)
+        op = bundle2.bundleoperation(pullop.repo, pullop.gettransaction,
+                                     source='pull')
         op.modes['bookmarks'] = 'records'
         bundle2.processbundle(pullop.repo, bundle, op=op)
     except bundle2.AbortFromPart as exc:
@@ -2052,7 +2053,8 @@
                     gettransaction()
 
                 op = bundle2.bundleoperation(repo, gettransaction,
-                                             captureoutput=captureoutput)
+                                             captureoutput=captureoutput,
+                                             source='push')
                 try:
                     op = bundle2.processbundle(repo, cg, op=op)
                 finally: