I noticed that recent source repositories for CentOS Extras packages do not have SRPMs for each available RPM.
In particular, I wanted to download the SRPM for cloud-init. After enabling the extras-source repository, `yumdownloader –source cloud-init` doesn’t find any package. This used to work on CentOS 7.0.
See the content of the following two repos:
compared with http://vault.CentOS.org/7.0.1406/extras/Source/SPackages/
It looks like only packages which were updated have made it in the newer repositories.