Describe the issue
I am the primary maintainer of GNOME in Fedora for this cycle, taking over from @kalev and would like to add new builds to a long lived side tag, to avoid breaking composes and to coordinate changes.

When do you need this? (YYYY/MM/DD)
Not urgent, but preferably before 2022-02-12 for the 42.beta release.

When is this no longer needed or useful? (YYYY/MM/DD)
Some time between just after F36 release and F36 EOL, as GNOME module releases of stable versions will become less frequent throughout F36.

If we cannot complete your request, what is the impact?
Using user-generated side tags, which is less visible and convenient.