diff --git a/test/repos/bom.sh b/test/repos/bom.sh
new file mode 100644
index 000000000..f198e8c29
--- /dev/null
+++ b/test/repos/bom.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+set -ex; rm -rf repo; mkdir repo; cd repo
+
+git init
+
+cat <<EOT >> bomtest.txt A,B,C,D,E
+F,G,H,I,J
+K,L,M,N,O
+P,Q,R,S,T
+U,V,W,X,Y
+Z,1,2,3,4
+EOT