diff --git a/mercurial/rewriteutil.py b/mercurial/rewriteutil.py
--- a/mercurial/rewriteutil.py
+++ b/mercurial/rewriteutil.py
@@ -114,7 +114,11 @@
                 raise error.InputError(msg)
             else:
                 raise error.InputError(
-                    msg, hint=_(b"add --verbose for details")
+                    msg,
+                    hint=_(
+                        b"add --verbose for details or see "
+                        b"'hg help evolution.instability'"
+                    ),
                 )
 
 
diff --git a/tests/test-amend.t b/tests/test-amend.t
--- a/tests/test-amend.t
+++ b/tests/test-amend.t
@@ -239,7 +239,7 @@
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg amend -m divergent
   abort: cannot amend 112478962961, as that creates content-divergence with 16084da537dd
-  (add --verbose for details)
+  (add --verbose for details or see 'hg help evolution.instability')
   [10]
   $ hg amend -m divergent --config experimental.evolution.allowdivergence=true
   2 new content-divergent changesets
diff --git a/tests/test-branch-change.t b/tests/test-branch-change.t
--- a/tests/test-branch-change.t
+++ b/tests/test-branch-change.t
@@ -151,7 +151,7 @@
 
   $ hg branch -r 4 --hidden foobar
   abort: cannot change branch of 3938acfb5c0f, as that creates content-divergence with 7c1991464886
-  (add --verbose for details)
+  (add --verbose for details or see 'hg help evolution.instability')
   [10]
 
 Make sure bookmark movement is correct