Ref ByteString conversion done

Test suite passes.

Assistant/Threads/Merger.hs

@@ -109,6 +109,6 @@ isAnnexBranch f = n `isSuffixOf` f
 	n = '/' : Git.fromRef Annex.Branch.name
 
 fileToBranch :: FilePath -> Git.Ref
-fileToBranch f = Git.Ref $ "refs" </> base
+fileToBranch f = Git.Ref $ encodeBS' $ "refs" </> base
   where
 	base = Prelude.last $ split "/refs/" f

Assistant/Threads/Watcher.hs

@@ -330,7 +330,7 @@ addLink :: FilePath -> FilePath -> Maybe Key -> Assistant (Maybe Change)
 addLink file link mk = do
 	debug ["add symlink", file]
 	liftAnnex $ do
-		v <- catObjectDetails $ Ref $ ':':file
+		v <- catObjectDetails $ Ref $ encodeBS' $ ':':file
 		case v of
 			Just (currlink, sha, _type)
 				| s2w8 link == L.unpack currlink ->