How to override template of plugin 'login'?

/user/plugins/login/templates/login.html.twig

I want to customize this file. Where should I place a copy of it, to be save from upgrade overrides? Cannot find anything about how to handle templates of plugins.

Create an child theme with the devtools plugin and place youre custom templates in that child theme.

The child theme can be a complete copy of the original theme or an inhereted one.