diff --git a/Jenkinsfile b/Jenkinsfile
index fe42526..bfb61b3 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -25,6 +25,8 @@ currentBuild.result = "SUCCESS"
 
 try {
     node {
+        // Clean workspace before checkout to avoid git ref issues
+        deleteDir()
         stage 'Checkout'
         checkout scm
         checkoutDir = pwd()