diff -r f99d64e8a4e4 -r f0b6fbea00cf mercurial/changegroup.py
--- a/mercurial/changegroup.py	Thu Mar 22 21:19:31 2018 +0900
+++ b/mercurial/changegroup.py	Thu Mar 22 21:56:20 2018 +0900
@@ -28,6 +28,10 @@
     util,
 )
 
+from .utils import (
+    stringutil,
+)
+
 _CHANGEGROUPV1_DELTA_HEADER = "20s20s20s20s"
 _CHANGEGROUPV2_DELTA_HEADER = "20s20s20s20s20s"
 _CHANGEGROUPV3_DELTA_HEADER = ">20s20s20s20s20sH"
@@ -514,7 +518,7 @@
         if reorder == 'auto':
             reorder = None
         else:
-            reorder = util.parsebool(reorder)
+            reorder = stringutil.parsebool(reorder)
         self._repo = repo
         self._reorder = reorder
         self._progress = repo.ui.progress