How to change source? 如何换源？

[ccmywish]

RubyMetric/chsrc#19

chsrc is a command line tool to change source for various kinds of programming languages, OS packages, and some softwares repos. I'm adding feature to support pdm.

chsrc 是一个命令行换源工具，用来切换各种编程语言、操作系统包、一些软件仓库的源，对大陆用户非常有用。我想要为pdm添加支持。

I'm here to ask if this code piece is enough?
我想询问，下述命令是否是正确的且足够的？

# Check present mirror url
pdm config --global pypi.url 

# Change mirror url
pdm config --global pypi.url https://example.com/a/b/c

[frostming]

--global is not needed.