I made a repo with the edx-cookiecutters repo, and found parts that would have to change for repos in the edx GitHub organization instead of the openedx organization.
edx-cookiecutters has an issue for dealing with these organization differences: https://github.com/openedx/edx-cookiecutters/issues/308
Throughout
All GitHub URLs will need to be https://github.com/edx/whatever instead of https://github.com/openedx/whatever
...