What were you trying to do that didn't work?

We are trying to build packages that use `make` but on certain machines we are getting 'make -j0' which causes the builds to fail

Please provide the package NVR for which bug is seen:

rpm-4.18.99-1.el10+1

rpm-4.19.0-1.el10+1
rpm-4.19.0-2.el10+1

How reproducible:

On specific machines, 100%

On all the others, the value for j isn't what is expected.

Steps to reproduce

1. mock -r fedora-eln-i386 --shell
2. rpm --eval '%{getncpus}'
3. rpm --eval '%{getncpus proc}'

Expected results

Both outputs should be the same, such as 20 / 20

Actual results

Both outputs are different.  And depending on the results, it is sometimes 0.

Such as 20/5 or 64/0