utc; TZ=UTC wget https://transfer.archivete.am/oUjcK/f; utc
...
utc; TZ=UTC wget https://transfer.archivete.am/hK8IV/f -O f.txt; utc
...
sha1sum f; cat f.txt; h="$(head -n1 f.txt | perl -pE "s/^.{42}//g")"; utc; mv -n f "$h"; utc; mv -n f.txt "$h.txt"; utc
...