# HG changeset patch
# User Sean Farley <sean@farley.io>
# Date 1443135131 25200
# Node ID c1fb2cab626066fc365203b21d7e0cf9ff1724d1
# Parent  7c20d501709b7a23c1334bf1fd2905fd42f559d0
clone: check update rev for being True

In 30be3aeb5344, there was an attempt to fallback to looking up the update
revision assuming it was always a rev but the documentation states:

  True means update to default rev, anything else is treated as a revision

Therefore, we should only fallback to looking up the update rev if it is not
True. This bug was found in hg-git and I couldn't think of a test that does
this in pure Mercurial since the source repository is checked for the revision
as well (and therefore gracefully falls back).

diff -r 7c20d501709b -r c1fb2cab6260 mercurial/hg.py
--- a/mercurial/hg.py	Thu Sep 24 15:47:23 2015 -0700
+++ b/mercurial/hg.py	Thu Sep 24 15:52:11 2015 -0700
@@ -582,10 +582,11 @@
                     try:
                         uprev = destrepo.lookup(checkout)
                     except error.RepoLookupError:
-                        try:
-                            uprev = destrepo.lookup(update)
-                        except error.RepoLookupError:
-                            pass
+                        if update is not True:
+                            try:
+                                uprev = destrepo.lookup(update)
+                            except error.RepoLookupError:
+                                pass
                 if uprev is None:
                     try:
                         uprev = destrepo._bookmarks['@']