--- a/mercurial/localrepo.py	Tue Oct 10 10:03:50 2023 +0200
+++ b/mercurial/localrepo.py	Tue Oct 10 10:03:58 2023 +0200
@@ -1130,7 +1130,7 @@
     options[b'sparse-read-min-gap-size'] = srmingapsize
 
     sparserevlog = requirementsmod.SPARSEREVLOG_REQUIREMENT in requirements
-    options[b'sparse-revlog'] = sparserevlog
+    delta_config.sparse_revlog = sparserevlog
     if sparserevlog:
         options[b'generaldelta'] = True