Adding a link is little bit tricky as there are several control files for different products. If you want to add the same client to SLE and openSUSE you have to touch several control files in several Git repositories...

The relevant repositories are https://github.com/yast/skelcd-control-openSUSE and https://github.com/yast/skelcd-control-openSUSE-LangAddOn (for language add-on).

(The skelcd package for SLE is still missing, I'll add it later.)