transport-helper: prefer Git's builtins over dashed form

This helps with minimal installations such as MinGit that refuse to
waste .zip real estate by shipping identical copies of builtins (.zip
files do not support hard links).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

transport-helper.c

@@ -119,10 +119,10 @@ static struct child_process *get_helper(struct transport *transport)
 	helper->in = -1;
 	helper->out = -1;
 	helper->err = 0;
-	argv_array_pushf(&helper->args, "git-remote-%s", data->name);
+	argv_array_pushf(&helper->args, "remote-%s", data->name);
 	argv_array_push(&helper->args, transport->remote->name);
 	argv_array_push(&helper->args, remove_ext_force(transport->url));
-	helper->git_cmd = 0;
+	helper->git_cmd = 1;
 	helper->silent_exec_failure = 1;
 
 	if (have_git_dir())