diff --git a/reference.txt b/reference.txt
new file mode 100644
index 0000000000..df4de42927
--- /dev/null
+++ b/reference.txt
@@ -0,0 +1 @@
+5e97df67086d2ac10ae81272f890a1771af37f28
diff --git a/references.txt b/references.txt
index 93e836949a..28e5f14082 100644
--- a/references.txt
+++ b/references.txt
@@ -364,3 +364,4 @@ e3d5bc9cb69146c5d1dd755ed5e8cf2f54566b3a
 f28a1461a4122eed74c423156f1969ba204e6948
 e18cd8073ea975fe92c1bad4dea957b16ee0b1c4
 5e97df67086d2ac10ae81272f890a1771af37f28
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