diff --git a/.gitarchive-info b/.gitarchive-info
new file mode 100644
index 00000000000..83e5b86e569
--- /dev/null
+++ b/.gitarchive-info
@@ -0,0 +1,2 @@
+Changeset: $Format:%H$
+Commit date: $Format:%cD$
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000000..f7bf506d392
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+.gitarchive-info export-subst