windows subsystem for linux – How to correct `git` reporting `detected dubious ownership in repository` without adding `safe.directory` when using WSL?

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I used git for the last few years in this context:

Host = my laptop, windows.
WSL enabled
Repos live in the Linux side.
I access them both from the Linux and the Windows side.

I can access the files in Linux either via git-bash like this (via the //wsl$/ share):

Or natively in the WSL bash terminal:

Those accesses go to the very same directory.

Now it happens that if I do git status inside a repo from the windows side it gives the error fatal: detected dubious ownership in repository at:

While in the WSL-Linux it does not, for the same directory:

It did not happen before. I’ve been using this setup for years. This started happening 2 days ago.

In fact, I installed a newer version of git-bash 2 days ago and I suspect the bash environment could condition this.

I work with about 100 repos, and I have found to fail in all of them which I’ve tried (about 10 repos). Expectedly it’ll happen to those 100 repos.

None of those previously-working now-failing repos have been touched, so neither users, neither permissions have changed.

So mutating from “well” to “bad” is not in the filesystem side, must be in the git-bash side.

I don’t want to just white-list it with safe.directory. I want to understand what’s going on behind the scenes. Why it happens today and not 3 days ago. I want to know “what does git expect” and see how can I correct it.

The users seem correct. From the linux side: