Nice example (thanks bochecha):
https://github.com/Cangjians/libcangjie/releases/tag/v1.3
"libcangjie..." URL are valid, as created by uptream
https://github.com/Cangjians/libcangjie/releases/download/v1.3/libcangjie-1....
"Source code" URL are NOT immutable, so not valid.
https://github.com/Cangjians/libcangjie/archive/v1.3.tar.gz
Remi.