TBR: Fix cmdline test.

Change-Id: Iecc9a2a23da1b94b173ddff7d4624a4cb5728126
diff --git a/cmdline/cmdline_test.go b/cmdline/cmdline_test.go
index 69d687c..4eb1d70 100644
--- a/cmdline/cmdline_test.go
+++ b/cmdline/cmdline_test.go
@@ -2467,6 +2467,8 @@
 		Short:    "Short description of command unlikely",
 		Long:     "Long description of command unlikely.",
 		LookPath: true,
+		// TODO(nlacasse): Get rid of this once v23->jiri transition is complete.
+		LookPathPrefixes: []string{"unlikely"},
 		Children: []*Command{
 			&Command{
 				Runner: RunnerFunc(runHello),