OS X Unicode Normalization Hits Again

git fails test t3902-quoted for me starting with 8424981: Fix invalid read in quote_c_style_counted

The problem isn't with the code, or the test.  It's that OS X is "normalizing" the file paths again.

diff --git a/t/t3902-quoted.sh b/t/t3902-quoted.sh
index 5868052..14da45f 100755
--- a/t/t3902-quoted.sh
+++ b/t/t3902-quoted.sh

@@ -33,6 +33,7 @@ for_each_name () {
 
 test_expect_success setup '
 
+       mkdir "caractère spécial" &&
        for_each_name "echo initial >\"\$name\""
        git add . &&
        git commit -q -m Initial &&

Git makes the directory "caract\303\250re sp\303\251cial" but OS X stores "caracte\314\200re spe\314\201cial".

Should I just alter the test to use the same form as OS X, or is there a better method?

~~ Brian