--- a/tests/test-exchange-B7.t	Fri Mar 24 09:42:39 2017 +0100
+++ b/tests/test-exchange-B7.t	Fri Mar 24 09:49:03 2017 +0100
@@ -53,7 +53,7 @@
   a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04 0000000000000000000000000000000000000000
   f5bc6836db60e308a17ba08bf050154ba9c4fad7 926d9d84b97b3483891ae983990ad87c1f7827e9
   f6fbb35d8ac958bbe70035e4c789c18471cdc0af e041f7ff1c7bd5501c7ab602baa35f0873128021
-  $ hg debugobshashrange --rev 'head()'
+  $ hg debugobshashrange --subranges --rev 'head()'
            rev         node        index         size        depth      obshash
              1 f5bc6836db60            0            2            2 926d9d84b97b
              0 a9bdc8b26820            0            1            1 000000000000