diff --git a/sub-a/bar.txt b/sub-a/bar.txt
new file mode 100644
--- /dev/null
+++ b/sub-a/bar.txt
@@ -0,0 +1 @@
+foo
diff --git a/sub-a/foo.txt b/sub-a/foo.txt
new file mode 100644
--- /dev/null
+++ b/sub-a/foo.txt
@@ -0,0 +1 @@
+foo
diff --git a/sub-a/quux.txt b/sub-a/quux.txt
new file mode 100644
--- /dev/null
+++ b/sub-a/quux.txt
@@ -0,0 +1 @@
+bar