The upstream changelog is maintained as part of the git repository tags, and can be updated by writing the output of
	for t in $(git tag -l | sort -Vr); do git tag -ln999 $t | sed -E '/^ *\([[:xdigit:]]{40}\)$/d;s/\s*$//'; echo; done | sed '/^ISELECT_1_4_0/q' | head -n-2
inside an upstream checkout to d/changelog.upstream.

The upstream news are maintained as release mails to
  https://lists.sr.ht/~nabijaczleweli/ossp
and should be appended to d/NEWS.upstream.
