public static function get_hash($git_path, $ref) {
$args = array("rev-parse", "--verify", "-q", $ref);
$result = self::git_execute($args, $git_path);
public static function get_hash($git_path, $ref) {
$args = array("rev-parse", "--verify", "-q", $ref);
$result = self::git_execute($args, $git_path);