diff --git a/blueocean-git-pipeline/src/main/java/io/jenkins/blueocean/blueocean_git_pipeline/GitUtils.java b/blueocean-git-pipeline/src/main/java/io/jenkins/blueocean/blueocean_git_pipeline/GitUtils.java
index 5c6b99b11b..f040c2c5d9 100644
--- a/blueocean-git-pipeline/src/main/java/io/jenkins/blueocean/blueocean_git_pipeline/GitUtils.java
+++ b/blueocean-git-pipeline/src/main/java/io/jenkins/blueocean/blueocean_git_pipeline/GitUtils.java
@@ -71,6 +71,7 @@
 import java.io.InputStream;
 import java.nio.charset.StandardCharsets;
 import java.text.MessageFormat;
+import java.time.Instant;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
@@ -405,7 +406,7 @@ private static DirCache createTemporaryIndex(final Repository repo, final Object
         final DirCache inCoreIndex = DirCache.newInCore();
         final DirCacheBuilder dcBuilder = inCoreIndex.builder();
         try (final ObjectInserter inserter = repo.newObjectInserter()) {
-            long lastModified = System.currentTimeMillis();
+            Instant lastModified = Instant.now();
 
             try {
                 if (contents != null) {