Update test suite to nightly-2019-05-09
diff --git a/tests/clone.sh b/tests/clone.sh
index 063fec6..3b1e443 100755
--- a/tests/clone.sh
+++ b/tests/clone.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-REV=1999a2288123173b2e487865c9a04386173025f7
+REV=3f5152e200c0c02dfe0f79367948c98053d35855
 
 set -euo pipefail
 cd "$(dirname "${BASH_SOURCE[0]}")"