Bit more information in the commit buffer.

magit.el

@@ -2464,9 +2464,12 @@ insert a line to tell how to insert more of them"
   (magit-create-buffer-sections
     (magit-git-section nil nil
 		       'magit-wash-commit
-		       "log" "--max-count=1"
+		       "log"
+		       "--decorate=full"
+		       "--max-count=1"
 		       "--pretty=medium"
-		       "--cc" "-p" commit)))
+		       "--cc"
+		       "-p" commit)))
 
 (define-minor-mode magit-commit-mode
     "Minor mode to view git commit"