diff --git a/.github/workflows/security-guardian.yml b/.github/workflows/security-guardian.yml
index ea031f255d037..05655503e3702 100644
--- a/.github/workflows/security-guardian.yml
+++ b/.github/workflows/security-guardian.yml
@@ -61,6 +61,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0  # Fetches full history
 
       - name: Get list of changed .template.json files
         id: filter_files
diff --git a/tools/@aws-cdk/security-guardian/test/templates/CMCMK-Stack.template.json b/tools/@aws-cdk/security-guardian/test/templates/CMCMK-Stack.template.json
index eed2f7244155d..66ab20bfbe4dc 100644
--- a/tools/@aws-cdk/security-guardian/test/templates/CMCMK-Stack.template.json
+++ b/tools/@aws-cdk/security-guardian/test/templates/CMCMK-Stack.template.json
@@ -1,6 +1,6 @@
 {
  "Resources": { 
-  "LambdaExecutionRoleD5C26073": {  
+  "LambdaExecutionRoleD5C26073": {   
    "Type": "AWS::IAM::Role",
    "Properties": {
     "AssumeRolePolicyDocument": {