You are using staging server - a separate instance of the ESP Component Registry that allows you to try distribution tools and processes without affecting the real registry.
To create a project from this example, run:
idf.py create-project-from-example "test_component_manager/test_0ce1d3da-5267-4b49-b0e4-86b9f53a291d_deletable_wrong_ver=1.0.0:cmp_ex"