diff --git a/reference.txt b/reference.txt
new file mode 100644
index 00000000000..a0121007ea7
--- /dev/null
+++ b/reference.txt
@@ -0,0 +1 @@
+6f1108c8e5078bdcbb39e3bb9ce0e86be2378404
diff --git a/references.txt b/references.txt
index db2598f0820..ddb96f98788 100644
--- a/references.txt
+++ b/references.txt
@@ -227,3 +227,4 @@ cbdd859f3702f084fa22a22d7e4459f7e4b43316
 e59c07a51516fe4c9b509b338863a62bd9406d0d
 c50b9ffcff1ea4a31e509f124bf0f87baced36af
 494b8e902a3947c3c10bee83fde353fca02e3883
+486ddbfe9cd2b72d6ad3253ed78b00bc41d0cd3c