--- a/hgext/remotefilelog/fileserverclient.py	Mon Apr 19 11:22:24 2021 +0200
+++ b/hgext/remotefilelog/fileserverclient.py	Wed May 05 18:26:04 2021 -0400
@@ -272,7 +272,7 @@
 def _getfiles_threaded(
     remote, receivemissing, progresstick, missed, idmap, step
 ):
-    remote._callstream(b"getfiles")
+    remote._callstream(b"x_rfl_getfiles")
     pipeo = remote._pipeo
     pipei = remote._pipei