can not generate build requires for python-* pkg

[yAn1hCDc]

I am building the python-jupyter-client package from Fedora. Some build requires for this package are generated dynamically like this:
%generate_buildrequires
%pyproject_buildrequires -w %{?with_tests:-x test} %{?with_doc:-x docs}
And i got error message:
error: Failed build dependencies:
python3dist(pip) >= 19 is needed by python-jupyter-client-7.4.9
python3dist(toml) is needed by python-jupyter-client-7.4.9
I found that obs-build has code to solve this problem, but it is not called, probably because the value of RPMLIST is not empty.
if test "$BUILD_SUCCEEDED" = genbuildreqs -a "$DO_INIT" = true -a -z "$RPMLIST" -a -z "$RUNNING_IN_VM" -a -n "${GEN_BUILDREQS_PACKS[*]}" ; then
So I want to know how to get to this branch.
The obs-build version I used was 20240321.