diff -r cdfba684b6a1 -r 53229e170496 mercurial/configitems.py
--- a/mercurial/configitems.py	Fri Aug 12 14:35:34 2022 -0700
+++ b/mercurial/configitems.py	Mon Aug 22 16:59:14 2022 -0400
@@ -1454,7 +1454,7 @@
 coreconfigitem(
     b'shelve',
     b'store',
-    default='internal',
+    default=b'internal',
     experimental=True,
 )
 coreconfigitem(