Using git for windows and git bash, everytime I fetch my repository, I have

 - [deleted]                 (none)                  -> origin/Bug/aabbcc
 * [new branch]              bug/aabbcc              -> origin/bug/aabbcc

due to the upper case “B” of bug, I guess.

If I fetch multiple times in a row, this will appear every-time (so as I understand it, no change is done despite the message).

If I do git remote prune origin, then a first fetch will recreate branch with a lowercase “b”, and another fetch will show once again the same problem.

How could I avoid this without modifying the distant repo? (this branch is not mine, and I can’t change it)