--- a/mercurial/commands.py	Wed Dec 02 20:10:22 2020 +0100
+++ b/mercurial/commands.py	Wed Dec 02 23:15:11 2020 +0100
@@ -5337,6 +5337,7 @@
 
     source, branches = hg.parseurl(ui.expandpath(source), opts.get(b'branch'))
     ui.status(_(b'pulling from %s\n') % util.hidepassword(source))
+    ui.flush()
     other = hg.peer(repo, opts, source)
     try:
         revs, checkout = hg.addbranchrevs(