diff --git a/metadata/.gitignore b/metadata/.gitignore
new file mode 100644
index 0000000..b832614
--- /dev/null
+++ b/metadata/.gitignore
@@ -0,0 +1,15 @@
+# These are added during tree generation only.
+/.checksum-test-marker
+/cache
+/dtd
+/glsa
+/herds.xml
+/md5-cache
+/news
+/pkg_desc_index
+/projects.xml
+/timestamp
+/timestamp.chk
+/timestamp.commit
+/timestamp.x
+/xml-schema