Don't try to read config from repos with annex-ignore set.

Remote/Git.hs

@@ -56,10 +56,11 @@ gen r u _ = do
 	 - the config of an URL remote is only read when there is no
 	 - cached UUID value. -}
 	let cheap = not $ Git.repoIsUrl r
-	r' <- case (cheap, u) of
-		(True, _) -> do
-			tryGitConfigRead r
-		(False, "") -> tryGitConfigRead r
+	notignored <- repoNotIgnored r
+	r' <- case (cheap, notignored, u) of
+		(_, False, _) -> return r
+		(True, _, _) -> tryGitConfigRead r
+		(False, _, "") -> tryGitConfigRead r
 		_ -> return r
 
 	u' <- getRepoUUID r'

debian/changelog

@@ -3,6 +3,7 @@ git-annex (3.20111106) UNRELEASED; urgency=low
   * merge: Use fast-forward merges when possible.
     Thanks Valentin Haenel for a test case showing how non-fast-forward
     merges could result in an ongoing pull/merge/push cycle.
+  * Don't try to read config from repos with annex-ignore set.
 
  -- Joey Hess <joeyh@debian.org>  Sun, 06 Nov 2011 14:57:57 -0400