How to change the titlespacing of \chapter*{}?

I use this code to change the spacing of \chapter{}:

\usepackage{titlesec}\titlespacing*{\chapter}{0pt}{-10pt}{15pt}

How can I change the spacing of the starred version \chapter*{}?

Here is an MWE:

\documentclass{report}\usepackage[utf8]{inputenc}\usepackage{titlesec}\titlespacing*{name=\chapter}{0pt}{-50pt}{50pt}\titlespacing*{name=\chapter, numberless}{0pt}{-50pt}{50pt}\begin{document}\chapter*{Introduction}\end{document}