I've no idea and I cannot find any example now, If I recall correctly it was something along the lines of a custom -arXiv note: this paper has 56% text similari

I've no idea and I cannot find any example now, If I recall correctly it was something along the lines of a custom -arXiv note: this paper has 56% text similarity with this other submission. I checked the similar one, and was the same authors but different titles, gussued it was a case of a draft not getting a revision properly, but didnt double check for the author email beyond the name (it could also be someone impersonating the real authors with fake credentials, i guess) but i think it was a revision! if i find it again ill comment back here