use checksum for usda-dash src copy

inventory.nix

@@ -64,7 +64,7 @@
   #   "external" = {
   #     devices."remote" = builtins.fetchGit {            # External module via Git
   #       url = "https://github.com/example/config";
-  #       rev = "abc123...";
+  #       rev = "e1ccd7cc3e709afe4f50b0627e1c4bde49165014";
   #     };
   #   };  # ========== Lab Laptops ==========
   # Creates: nix-laptop1, nix-laptop2
@@ -121,8 +121,9 @@
         };
       };
       "usda-dash" = builtins.fetchGit {
-        url = "https://git.factory.uga.edu/MODEL/usda-dash-config.git";
-        rev = "6c0029057aa50d0b4d6a0205c3ded890eb08979c";
+        url = "git@factory.uga.edu:MODEL/usda-dash-config.git";
+        rev = "49cded91cff4a956d4e01ac6b8fe4efa86f82182";
+        submodules = true;
       };
     };
     overrides = {
@@ -150,7 +151,7 @@
   #     # Option 1: fetchGit with specific revision (recommended for reproducibility)
   #     "prod-server" = builtins.fetchGit {
   #       url = "https://github.com/example/server-config";
-  #       rev = "abc123def456...";  # Full commit hash
+  #       rev = "e1ccd7cc3e709afe4f50b0627e1c4bde49165014";  # Full commit hash
   #       ref = "main";              # Optional: branch/tag name
   #     };
   #