It was probably the 'mirror replication delay', now it is correctly installed after an "apt update" and repeating the above command "apt install brz-debian/focal-proposed" that previously failed.
I'll test and report within 24h.
It was probably the 'mirror replication delay', now it is correctly installed after an "apt update" and repeating the above command "apt install brz-debian/ focal-proposed" that previously failed.
I'll test and report within 24h.