diff -r a0674e916fb6 -r f254fc73d956 mercurial/exchange.py
--- a/mercurial/exchange.py	Thu Mar 03 17:39:20 2022 -0800
+++ b/mercurial/exchange.py	Thu Mar 03 18:28:30 2022 -0800
@@ -805,7 +805,7 @@
             bundler.newpart(b'check:heads', data=iter(pushop.remoteheads))
         else:
             affected = set()
-            for branch, heads in pycompat.iteritems(pushop.pushbranchmap):
+            for branch, heads in pushop.pushbranchmap.items():
                 remoteheads, newheads, unsyncedheads, discardedheads = heads
                 if remoteheads is not None:
                     remote = set(remoteheads)
@@ -1116,7 +1116,7 @@
 
         part = bundler.newpart(b'pushvars')
 
-        for key, value in pycompat.iteritems(shellvars):
+        for key, value in shellvars.items():
             part.addparam(key, value, mandatory=False)