File _service of Package screen-rhel
<services>
<service name="download_src_package">
<param name="host">vault.centos.org</param>
<param name="protocol">http</param>
<param name="path">/7.5.1804/os/Source/SPackages/screen-4.1.0-0.25.20120314git3c2946.el7.src.rpm</param>
</service>
</services>