Thanks for the submission, but there are few issues with it:
Please do not use service for downloading files like this.
Just ensure the url is proper for the Source and then run this command to fetch the tarball you can add "osc service localrun download_files"
After that convert the changes using /usr/lib/build/spec2changes to separate bzrtools.changes file
Also might be good idea to install spec-cleaner package from openSUSE:Tools repository and run it over to get rid of some whitespace/deprecated variables.

Superseded by request 223506