[Bug 279177] Cannot unsubscribe from POWERPC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=279177

            Bug ID: 279177
           Summary: Cannot unsubscribe from POWERPC
           Product: Documentation
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Website
          Assignee: doc@FreeBSD.org
          Reporter: aik@ozlabs.ru

In the past I worked on POWERPC and interacted with FreeBSD for a short period
of time.
Years later I am receiving notifications on tickets like this:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=279137

I am neither assignee (it is "freebsd-ppc"), nor in the cc. I am guessing I am
part of some PPC group or something. Emails do not provide with the
"unsubscribe" link.

How do I unsubscribe just from POWERPC bugs? Why am I receiving these? Thanks,

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