diff -r 2725d62ac632 -r 37edc8e5ed4f mercurial/commands.py
--- a/mercurial/commands.py	Fri Nov 27 20:23:02 2015 +0100
+++ b/mercurial/commands.py	Fri Nov 27 20:23:23 2015 +0100
@@ -4219,6 +4219,9 @@
 
           hg id -r tip http://selenic.com/hg/
 
+    See :hg:`log` for generating more information about specific revisions,
+    including full hash identifiers.
+
     Returns 0 if successful.
     """