with
 newline'
 
-if mkdir "$repo_with_newline" 2>/dev/null
+if test_have_prereq !MINGW && mkdir "$repo_with_newline" 2>/dev/null
 then
        test_set_prereq FUNNYNAMES
 else
 '
 
 test_expect_success 'prompt - describe detached head - branch' '
-       printf " ((b1~1))" >expected &&
+       printf " ((tags/t2~1))" >expected &&
        git checkout b1^ &&
        test_when_finished "git checkout master" &&
        (