diff --git a/.gitattributes b/.gitattributes
index e87bab18ac8..0d3537f28e0 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1 +1,4 @@
 dist/clang/patches/*.patch -diff -merge -text
+.tag                    export-subst
+.gitattributes          export-ignore
+.gitignore              export-ignore
diff --git a/.tag b/.tag
new file mode 100644
index 00000000000..6828f88dcb0
--- /dev/null
+++ b/.tag
@@ -0,0 +1 @@
+$Format:%H$