[releng] Non-fast-forward update to branch abderrahim/downloadsites

[Abderrahim Kitouni <akitouni src gnome org>]

The branch 'abderrahim/downloadsites' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  99c616e... tarball-conversion: add a specific implementation for downl

Commits added to the branch:

  3d1c4a1... tarball-conversion: add a specific implementation for downl