Version 3.28.1 is missing from download.gnome.org
There is no 3.28.1 release on https://download.gnome.org/sources/gnome-shell/3.28/
Maybe you did forget to upload it?
There is no 3.28.1 release on https://download.gnome.org/sources/gnome-shell/3.28/
Maybe you did forget to upload it?