Recently CentOS upgraded from 7.5 to 7.6 and now one of the packages upgraded to a newer version I'm not ready to use yet. I'm planning instead to build and support an older version of this package.
I wonder if there a way to extract or see (perhaps even versioned) original spec files from which CentOS packages are built. Is there a source code repository for spec files which are used to build official EPEL packages?