help: use parseopt

diff --git a/t/t2000-checkout-cache-clash.sh b/t/t2000-checkout-cache-clash.sh
index ac84335b0a47fe1d26794e4c92f00d0ed051e540..5141fab7cf567fc5d16a8e9a296d2aff5f6c67e6 100755 (executable)
--- a/t/t2000-checkout-cache-clash.sh
+++ b/t/t2000-checkout-cache-clash.sh
@@ -36,9 +36,9 @@ mkdir path0
 date >path0/file0
 date >path1
 
-test_expect_failure \
+test_expect_success \
     'git checkout-index without -f should fail on conflicting work tree.' \
-    'git checkout-index -a'
+    '! git checkout-index -a'
 
 test_expect_success \
     'git checkout-index with -f should succeed.' \