Update test suite to nightly-2018-12-15
diff --git a/tests/clone.sh b/tests/clone.sh
index d0762a4..e313c93 100755
--- a/tests/clone.sh
+++ b/tests/clone.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-REV=15d770400eed9018f18bddf83dd65cb7789280a5
+REV=96d1334e567237b1507cd277938e7ae2de75ff51
 
 set -euo pipefail
 cd "$(dirname "${BASH_SOURCE[0]}")"