Sorry if this is dumb question, I'm new to OBS, I am probably missing something obvious.

I managed to create a github integration and have the *.dsc and *.tar.xz files needed for Debian builds downloaded automatically from github:
https://build.opensuse.org/package/view_file/home:mx-packaging/xdelta3-gui

However, the files have a "_service:" prefix and the build doesn't start (I assume because of the prefix, but not sure). 

Here's my _service file
https://build.opensuse.org/package/view_file/home:mx-packaging/xdelta3-gui/_service?expand=1

Can anybody please take a look and let me know why this is not building (it shows "success" but there's no binary created)? Do I need to rename the downloaded files, how?

Thanks,
Adrian