NXP-19382, it is possible to create the release branch early in the release process (with the "branch" command), before the "prepare" command.
This makes it mandatory to later use that "branch to release". Not an issue for the platform but it is an issue for the packages: see https://github.com/nuxeo/integration-scripts/commit/8eb2d5a66a6072e61be773e353b3d1f66aca6533
=> Allow to customize the release branch name.
That branch will have to be renamed before the push by the "perform" command to finally align on the maintenance branch naming policy.