The following bug has been logged on the website:
Bug reference: 10408
Logged by: Simon Nichols
Email address: s.c.nichols@sussex.ac.uk
PostgreSQL version: 9.2.8
Operating system: CentOS 6.5
Description:
This yum repomd file is out of date:
http://yum.postgresql.org/9.2/redhat/rhel-6-x86_64/repodata/repomd.xml
I think it contains the checksums for the previous version. This prevents
installation from the repository.