Description of problem:
Once a RHEL 8 brew build is added to errata, it is exported to git.centos.org and built for CentOS Stream 8. In bug 1831941, it was requested to backport the --runstatedir flag to autoconf. Here is a timeline of what happened next.
2021-01-19 implemented in autoconf-2.69-28.el8 
2021-01-20 added to advisory RHBA-2021:68474 
2021-01-21 exported to the c8s branch on git.centos.org 
2021-01-21 built for CentOS Stream 8 
2021-01-27 shipped for CentOS Stream 8 in compose CentOS-Stream-8-20210127.n.0 
2021-03-19 reverted in dist-git 
2021-03-22 dropped from advisory RHBA-2021:68474 
We are now in the situation where CentOS shipped an NVR to users that will not go into RHEL. I've taken care of pulling that NVR from our mirrors, but users who've already installed that package need an upgrade path solution to get back onto the correct package. Please bump the release to 29 to accomplish this.
Version-Release number of selected component (if applicable):
 bug 1831941 comment 24
 bug 1831941 comment 52