The UpdateKdeRecipe script is assumingly aiding in updating KDE recipes.

It is a component of the Scripts collection and will normally reside under the Scripts/bin subdirectory.

It was in particular useful for the qt3/kde3 stack several years ago - presently (Sep 2017) it may need some modifications due to upstream changes to kde.

Parsing the URL for KDE at ftp://ftp.kde.org/pub/kde/stable/--help/src

KDE Plasma upstream can be found here: https://download.kde.org/stable/plasma/

KDE Applications can be found here: https://download.kde.org/stable/applications/