diff -r 30e0c15a71f7 -r 8378354bbdad src/Pure/Admin/isabelle_cronjob.scala
--- a/src/Pure/Admin/isabelle_cronjob.scala	Wed Nov 08 15:10:19 2023 +0100
+++ b/src/Pure/Admin/isabelle_cronjob.scala	Wed Nov 08 15:37:15 2023 +0100
@@ -386,7 +386,7 @@
         Remote_Build("Windows", "vmnipkow9", history = 90,
           components_base = "/cygdrive/d/isatest/contrib",
           options = "-m64 -M4" +
-            " -C /cygdrive/d/isatest/contrib" +
+            " -S /cygdrive/d/isatest/contrib" +
             " -e ISABELLE_OCAML=ocaml -e ISABELLE_OCAMLC=ocamlc -e ISABELLE_OCAML_SETUP=true" +
             " -e ISABELLE_GHC_SETUP=true" +
             " -e ISABELLE_SMLNJ=/usr/local/smlnj-110.81/bin/sml",