--- a/mercurial/dirstate.py	Sun Sep 20 20:08:22 2015 +0900
+++ b/mercurial/dirstate.py	Sun Sep 20 20:11:31 2015 +0900
@@ -42,6 +42,10 @@
         # ntpath.join(root, '') of Python 2.7.9 does not add sep if root is
         # UNC path pointing to root share (issue4557)
         self._rootdir = pathutil.normasprefix(root)
+        # internal config: ui.forcecwd
+        forcecwd = ui.config('ui', 'forcecwd')
+        if forcecwd:
+            self._cwd = forcecwd
         self._dirty = False
         self._dirtypl = False
         self._lastnormaltime = 0