diff -r 3941fe53670d -r ee91966aec0f mercurial/streamclone.py
--- a/mercurial/streamclone.py	Thu Feb 18 15:07:45 2021 +0100
+++ b/mercurial/streamclone.py	Wed Mar 03 14:00:45 2021 +0100
@@ -20,6 +20,7 @@
     narrowspec,
     phases,
     pycompat,
+    requirements as requirementsmod,
     scmutil,
     store,
     util,
@@ -83,7 +84,7 @@
     # is advertised and contains a comma-delimited list of requirements.
     requirements = set()
     if remote.capable(b'stream'):
-        requirements.add(b'revlogv1')
+        requirements.add(requirementsmod.REVLOGV1_REQUIREMENT)
     else:
         streamreqs = remote.capable(b'streamreqs')
         # This is weird and shouldn't happen with modern servers.