--- a/mercurial/wireproto.py	Fri Mar 02 18:55:18 2018 -0500
+++ b/mercurial/wireproto.py	Tue Feb 27 16:31:44 2018 -0800
@@ -740,9 +740,7 @@
 
     return bytesresponse(';'.join(res))
 
-# TODO mark as version 1 transport only once interaction with
-# SSH handshake mechanism is figured out.
-@wireprotocommand('between', 'pairs')
+@wireprotocommand('between', 'pairs', transportpolicy=POLICY_V1_ONLY)
 def between(repo, proto, pairs):
     pairs = [decodelist(p, '-') for p in pairs.split(" ")]
     r = []