diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000000000000000000000000000000000000..1a045fa1f021637288fd980c5c934af674ca8f25
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,4 @@
+.tag                    export-subst
+.gitignore              export-ignore
+.gitattributes          export-ignore
+.commit-template        export-ignore
diff --git a/.tag b/.tag
new file mode 100644
index 0000000000000000000000000000000000000000..6828f88dcb0e88b8cd738ad6044ce74d7a9a13c8
--- /dev/null
+++ b/.tag
@@ -0,0 +1 @@
+$Format:%H$