What is the nature and description of the request?

Allowing the use of variables within requirements.yml would allow for dynamic project updates by being able to choose a specific branch of a collection. This would entail that the project update within Controller could receive extra vars and pass it through to requirements.yml.

Branch override and other apparent options have been explored, including some suggestions in similar GitHub issues below.

Why does the customer need this? (List the business requirements here)

Running CI tests against a specific feature branch requires this to be able to be performed.

How would you like to achieve this? (List the functional requirements here)

Allow extra vars to be sent through the project update to ansible-galaxy using requirements.yml

Github Link if any

Similar asks here:

https://github.com/ansible/ansible/issues/44374

https://github.com/ansible/ansible/issues/36395

Asking for this to be revisited.