FWIW I have compared the jq_1.6.orig.tar.gz from the jq package in focal with the 1.6 upstream tarball - the only significant difference is that the tarball in debian/ubuntu removes the vendored / embedded copy of the oniguruma module - other than that it is the same as the upstream release.
FWIW I have compared the jq_1.6.orig.tar.gz from the jq package in focal with the 1.6 upstream tarball - the only significant difference is that the tarball in debian/ubuntu removes the vendored / embedded copy of the oniguruma module - other than that it is the same as the upstream release.