diff --git a/.kokoro/common.sh b/.kokoro/common.sh
index b7a0f0e811e9..902a2787338b 100644
--- a/.kokoro/common.sh
+++ b/.kokoro/common.sh
@@ -161,7 +161,8 @@ function generate_modified_modules_list() {
   # grep returns 1 (error code) and exits the pipeline if there is no match
   # If there is no match, it will return true so the rest of the commands can run
   git config --global --add safe.directory $(realpath .)
-  modified_files=$(git diff --name-only "${KOKORO_GITHUB_PULL_REQUEST_TARGET_BRANCH}...${KOKORO_GITHUB_PULL_REQUEST_COMMIT}")
+  modified_files=$(git diff --name-only \
+    "origin/${KOKORO_GITHUB_PULL_REQUEST_TARGET_BRANCH}...${KOKORO_GITHUB_PULL_REQUEST_COMMIT}" --)
   printf "Modified files:\n%s\n" "${modified_files}"
 
   # Generate the list of valid maven modules
diff --git a/java-vertexai/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/api/stub/PredictionServiceStub.java b/java-vertexai/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/api/stub/PredictionServiceStub.java
index 368c3ef411a1..46fa57793a82 100644
--- a/java-vertexai/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/api/stub/PredictionServiceStub.java
+++ b/java-vertexai/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/api/stub/PredictionServiceStub.java
@@ -18,6 +18,7 @@
 
 import static com.google.cloud.vertexai.api.PredictionServiceClient.ListLocationsPagedResponse;
 
+// testing file change to trigger build
 import com.google.api.HttpBody;
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.rpc.BidiStreamingCallable;