Drush make: simplexml_load_file(): I/O warning : failed to load external entity "" Project.php:74
This workaround fixed my issue:

In drush.inc

if ($use_wget) {
  drush_shell_exec("wget --no-check-certificate -q --timeout=30 -O %s %s", $destination_tmp, $url);
} else {
  drush_shell_exec("curl --insecure --tlsv1 --fail -s -L --connect-timeout 30 -o %s %s", $destination_tmp, $url);
}


so weird anyway...