diff --git a/specificationRepositoryConfiguration.json b/specificationRepositoryConfiguration.json
index 0c01f4a24883..588ca1fe2e88 100644
--- a/specificationRepositoryConfiguration.json
+++ b/specificationRepositoryConfiguration.json
@@ -14,8 +14,9 @@
       "configFilePath": "eng/automation/swagger_to_sdk_config.json"
     },
     "azure-sdk-for-js": {
-      "integrationRepository": "azure-sdk/azure-sdk-for-js",
-      "mainRepository": "Azure/azure-sdk-for-js"
+      "integrationRepository": "test-repo-billy/azure-sdk-for-js",
+      "mainBranch": "test_repo_breaking_change_mlc",
+      "mainRepository": "test-repo-billy/azure-sdk-for-js"
     },
     "azure-sdk-for-net": {
       "integrationRepository": "azure-sdk/azure-sdk-for-net",
@@ -49,8 +50,9 @@
           "configFilePath": "eng/automation/swagger_to_sdk_config.json"
         },
         "azure-sdk-for-js": {
-          "integrationRepository": "azure-sdk/azure-sdk-for-js-pr",
-          "mainRepository": "Azure/azure-sdk-for-js-pr"
+          "integrationRepository": "test-repo-billy/azure-sdk-for-js-pr",
+          "mainBranch": "test_repo_breaking_change_mlc",
+          "mainRepository": "test-repo-billy/azure-sdk-for-js-pr"
         },
         "azure-sdk-for-net": {
           "integrationRepository": "azure-sdk/azure-sdk-for-net-pr",