--- a/hgext/convert/common.py	Sun Oct 06 17:59:15 2019 -0400
+++ b/hgext/convert/common.py	Sun Oct 06 19:25:18 2019 -0400
@@ -411,7 +411,7 @@
     def _cmdline(self, cmd, *args, **kwargs):
         kwargs = pycompat.byteskwargs(kwargs)
         cmdline = [self.command, cmd] + list(args)
-        for k, v in kwargs.iteritems():
+        for k, v in pycompat.iteritems(kwargs):
             if len(k) == 1:
                 cmdline.append(b'-' + k)
             else: