renaming remote branch to same name with different casing fails to show new name in list of remote branches after fetch.

[reevestrife]

a remote branch was renamed by someone else from "origin/team/13.6.0" to "origin/Team/13.6.0
so the "t" became "T"

when I do a git fetch, the remote branch still shows the old name.
when I want to update the tracking reference, the old name is the only one in the list, and the new name is not appearing as a selectable option.
this then causes me to not be able to checkout to the new branch name or, merge the new branch name into my current branch.

[DanPristupov]

Yes, this is a fundamental problem with case-insensitive file system. Here are the topics with the explanation:

#1085 (comment)
#1453
#1620
#2144