While building two related new packages for EPEL9 with a chainbuild, the second one failed, however, now I am trying to work out how to specify the completed package in the build for the second package.

I have tried creating a side-tag and add the completed build to the side-tag, then building the second package in that side-tag, but it still claims that it can't find the first package, which it requires to build.

What is the correct sequence to do this for an EPEL9 build, or do I have to wait until the first package gets pushed to the stable before I can now build the second?

Regards

Frank