https://packagist.org/packages/mediawiki/vector-skin says the URL to the repo is https://git.wikimedia.org/git/mediawiki/skins/Vector.git
From T139206 :
I just run into this today by adding this to my composer.local.json:
` { "require": { "mediawiki/vector-skin": "@dev" } } `
It ends up with
` [RuntimeException] Failed to execute git clone --no-checkout 'https://git.wikimedia.org/git/mediawiki/skins/Vector.git' 'skins/Vector/' && cd 'skins/Vector/' && git remote add composer 'https:// git.wikimedia.org/git/mediawiki/skins/Vector.git' && git fetch composer Cloning into 'skins/Vector'... fatal: https://git.wikimedia.org/git/mediawiki/skins/Vector.git/info/refs not valid: is this a git repository? `