Not surprisingly, many of the songs in Gather 3rd ed. have turned up from other sources and have been blogged here already. This leaves songs that are often not used around here because they are from another culture.
That may be why this song, here credited as text and tune “South African” and yet somehow covered by copyright, is new to me. I note other versions have the lyrics in Shona (Haleluya! Pelo Tsa Rona) as well. I suspect in Australia at least, it is only going to be a choir piece.
Hymnary have the text. You can purchase the sheet music at GIA where it comes packaged with Siyahamba.