--- a/tests/test-remotefilelog-prefetch.t	Fri Apr 05 23:07:11 2019 -0400
+++ b/tests/test-remotefilelog-prefetch.t	Wed Apr 03 17:41:58 2019 -0700
@@ -197,6 +197,9 @@
   $ mv x x2
   $ mv y y2
   $ mv z z2
+  $ echo a > a
+  $ hg add a
+  $ rm a
   $ clearcache
   $ hg addremove -s 50 > /dev/null
   3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over * (glob)