0. log in::
bugzilla login email@host
1. generate a bug list::
bug=1555378
bugzilla query --blocked=$bug -s NEW,ASSIGNED --outputformat "%{id}::%{component}::%{summary}" -p Fedora | tee bugs
2. operate on the bugs::
cat bugs | ./ftbfs.py -nNUB
cat bugs | ./ftbfs.py -nA --after '2018-07-18 00:00:00 CEST'
(drop `-n` when the output looks good)