diff -r a8b17859684a -r 20a42325fdef mercurial/commandserver.py
--- a/mercurial/commandserver.py	Wed Aug 17 20:57:15 2016 -0700
+++ b/mercurial/commandserver.py	Wed Nov 23 00:03:11 2016 +0530
@@ -21,6 +21,7 @@
 from . import (
     encoding,
     error,
+    pycompat,
     util,
 )
 
@@ -152,7 +153,7 @@
     based stream to fout.
     """
     def __init__(self, ui, repo, fin, fout):
-        self.cwd = os.getcwd()
+        self.cwd = pycompat.getcwd()
 
         # developer config: cmdserver.log
         logpath = ui.config("cmdserver", "log", None)