Git from your vendor directory with PHPStorm and Github

PHPStorm allows to make changes to Composer vendor repositories by using multiple repositories in a project. When the vendor repository is on Bitbucket, this works out of the box. When it is on Github, a push will fail. To solve this you need to set the Github protocol to https:

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php composer.phar config --global github-protocols https

After that, your repository needs to be updated. For example: remove it from your vendor directory and run a composer update.