The global configuration can be listed with:
composer config -g -l
or edited manually with:
composer config -g -e
Then the configuration can be adjusted to:
{
"config": {},
"repositories": {
"REPOSITORY": {
"type": "composer",
"url": "REPOSITORY_URL"
}
}
}
where:
REPOSITORY is the repository name and,REPOSITORY_URL is the URL to the repository