I just happened on a video explaining/translating the "original" (?)

It would be interesting to hear the comments of scholars on the assertion, that Victorians shied away from the song because it contained one word few people would bother too much about, in a song at least.

The oldest surviving song in English is not what I expected - James Hargreaves Guitar

The word is in the translation on the Mudcat thread Lyr Req: Sumer Is Icumen In/Summer Is A-Coming In