diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -3013,7 +3013,10 @@
             output = [hexrev]
         fm.data(id=hexrev)
 
+        bmscache = [None]
         def getbms():
+            if bmscache[0] is not None:
+                return bmscache[0]
             bms = []
 
             if 'bookmarks' in peer.listkeys('namespaces'):
@@ -3021,19 +3024,20 @@
                 bms = [bm for bm, bmr in peer.listkeys('bookmarks').iteritems()
                        if bmr == hexremoterev]
 
-            return sorted(bms)
-
-        bms = getbms()
+            bmscache[0] = sorted(bms)
+            return bmscache[0]
+
         if bookmarks:
-            output.extend(bms)
+            output.extend(getbms())
         elif default and not ui.quiet:
             # multiple bookmarks for a single parent separated by '/'
-            bm = '/'.join(bms)
+            bm = '/'.join(getbms())
             if bm:
                 output.append(bm)
 
         fm.data(node=hex(remoterev))
-        fm.data(bookmarks=fm.formatlist(bms, name='bookmark'))
+        if 'bookmarks' in fm.datahint():
+            fm.data(bookmarks=fm.formatlist(getbms(), name='bookmark'))
     else:
         if rev:
             repo = scmutil.unhidehashlikerevs(repo, [rev], 'nowarn')