bring back OsPath changes

I hope that the windows test suite failure on appveyor was fixed by
updating to a newer windows there. I have not been able to reproduce
that failure in a windows 11 VM run locally.

Remote/Helper/Git.hs

@@ -5,6 +5,8 @@
  - Licensed under the GNU AGPL version 3 or higher.
  -}
 
+{-# LANGUAGE OverloadedStrings #-}
+
 module Remote.Helper.Git where
 
 import Annex.Common
@@ -21,6 +23,7 @@ import Data.Time.Clock.POSIX
 import System.PosixCompat.Files (modificationTime)
 import qualified Data.Map as M
 import qualified Data.Set as S
+import qualified System.FilePath.ByteString as P
 
 repoCheap :: Git.Repo -> Bool
 repoCheap = not . Git.repoIsUrl
@@ -59,9 +62,9 @@ guardUsable r fallback a
 
 gitRepoInfo :: Remote -> Annex [(String, String)]
 gitRepoInfo r = do
-	d <- fromRawFilePath <$> fromRepo Git.localGitDir
-	mtimes <- liftIO $ mapM (\p -> modificationTime <$> R.getFileStatus (toRawFilePath p))
-		=<< emptyWhenDoesNotExist (dirContentsRecursive (d </> "refs" </> "remotes" </> Remote.name r))
+	d <- fromRepo Git.localGitDir
+	mtimes <- liftIO $ mapM (\p -> modificationTime <$> R.getFileStatus p)
+		=<< emptyWhenDoesNotExist (dirContentsRecursive (d P.</> "refs" P.</> "remotes" P.</> encodeBS (Remote.name r)))
 	let lastsynctime = case mtimes of
 		[] -> "never"
 		_ -> show $ posixSecondsToUTCTime $ realToFrac $ maximum mtimes