Update getFlake with more explicit code.

Author: rschardt

nix/cloud/actions.nix

@@ -113,7 +113,9 @@
       push = "Push to repo";
     };
 
-    handbook = builtins.getFlake "github:input-output-hk/cicero/${config.run.facts.${factNames.ci}.value.revision}#handbook-entrypoint";
+    handbook = (
+      builtins.getFlake "github:input-output-hk/cicero/${config.run.facts.${factNames.ci}.value.revision}"
+    ).packages.${inputs.nixpkgs.system}.handbook-entrypoint;
   in {
     io = ''
       let cfg = {