Please give me some advice: One test domain name, multiple requirements Parallel at the same timeTesting issues

Do I have to configure multiple test domain names? Is there any other solution?

Let’s give an example: There is a functional module on branch A, which later needs to be revised, and then a new branch B is created for revision. After the revision is completed, it must be put into the test environment for testing, but the test environment There is only one, branch A is still in use, branch B cannot be placed directly.