Recently, a thread (see https://lists.centos.org/pipermail/centos-devel/2022-January/120171.html) was started onn this list to discuss the possibility to let SIGs pushing to git in a "flat layout" style instead "rpmbuild layout" style on git.centos.org.
As you know, since the beginning of git.centos.org, Red Hat pushed (as is still pushing, no change in sight for that part) in each /rpms/<package_name> git project in the "rpmbuild layout" style (so with SPECS/<pkg_name>.spec , eventually SOURCES/*)
That's what SIGs have been using for years now, and it's how it's also documented in the SIG guide (see https://sigs.centos.org/guide/git/)
Some SIGs wanted to bring "flat layout" style support so that they can just import existing branch from Fedora/Epel directly on git.centos.org without a need to change the dist-git layout, so get_sources.sh (from https://git.centos.org/centos-git-common) was recently modified to detect in which format the git repo is laid out and so how to retrieve sources from https://git.centos.org/sources.
This request was all tracked in ticket https://pagure.io/centos-infra/issue/659
The needed new centpkg-minimal (https://cbs.centos.org/koji/packageinfo?packageID=8196) was built/pushed "live" today on cbs.centos.org , as some --scratch builds were tested with automotive SIG to confirm that it was working fine.
We'll just add a simple note on the SIG Guide to mention that it's now possible to use the "flat layout" style (like Fedora/Epel) on git.centos.org for SIGs willing to use that layout.