t9100: fix breakage when SHELL_PATH is not /bin/sh

diff --git a/t/t9100-git-svn-basic.sh b/t/t9100-git-svn-basic.sh
index 5464b5bd14c41d583701f094c2a6e2885ab48e4a..936913cd24f65a639e8f593fb4869ea926aa1bbf 100755 (executable)
--- a/t/t9100-git-svn-basic.sh
+++ b/t/t9100-git-svn-basic.sh
@@ -30,7 +30,8 @@ test_expect_success \
                echo "deep dir" >dir/a/b/c/d/e/file &&
                mkdir bar &&
                echo "zzz" >bar/zzz &&
-               write_script exec.sh </dev/null &&
+               echo "#!/bin/sh" >exec.sh &&
+               chmod +x exec.sh &&
                svn_cmd import -m "import for git svn" . "$svnrepo" >/dev/null
        ) &&
        rm -rf import &&