As of now the following commands:
composer create-project -n concretecms/composer: the_oregon_trail
composer create-project -n concretecms/composer:v1.3.0 the_oregon_trail
give me no /public/concrete folder and no /vendor/bin/concrete as it should according to GitHub - concretecms/composer: Concrete CMS Composer base.
Does this work for you? I am sure that at the beginning of march it worked as expected.
Environment is ubuntu 22.04 on metal and in a docker container, same behaviour
composer create-project -n concretecms/composer:v1.2.0 the_oregon_trail
works but will give me concrete v8.x