diff --git a/Jenkinsfile b/Jenkinsfile
index b46c68e2b96944e4a39d9157def38963e834d3e6..9544343bec6ef964fb15cf94c7a1a7c93d98810f 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -41,13 +41,15 @@ def pre_test(){
     
     cd ${WKC}
     git checkout develop
+    git reset --hard HEAD~10
     git pull
     git fetch
     git checkout ${CHANGE_BRANCH}
+    git reset --hard HEAD~10
     git pull
     git merge develop
     cd ${WK}
-    git reset --hard
+    git reset --hard HEAD~10
     git checkout develop
     git pull
     cd ${WK}