unit tests / cirrus ci fails

Hi,
i'm having a issue with a failing test on my pull request.
https://github.com/git/git/pull/1041/checks?check_run_id=3028222798

I have added a bunch of new tests and they fail on the freebsd12 test 
that's run via gitgitgadget.
Is there any way to enable verbose / debug output on these or a simple 
way to run tests manually in the same environment?

I had no issues with the full test suite on fedora / centos linux except 
for "t0500-progress-display.sh"
which seems to be a different issue. this test fails in master as well 
on my fedora34 but works just fine on centos8.

Kind regards,
Fabian Stelzer