self-upldate: CI Failure about git tags

I came across this error today during self-update of cerbero. This is to my knowledge a new issue that I have not seen before. I don't know yet what it means and how to prevent this.

From https://gitlab.freedesktop.org/gstreamer/cerbero
 ! [rejected]            1.0.10     -> 1.0.10  (would clobber existing tag)