$ mount 
 ...
 C: on /c type drvfs (rw,noatime,uid=1000,gid=1000,umask=22,fmask=111,metadata)
 D: on /d type drvfs (rw,noatime,uid=1000,gid=1000,umask=22,fmask=111,metadata)

$ cat  /etc/wsl.conf
[automount]
root = /
options = "metadata,uid=1000,gid=1000,umask=22,fmask=111"

Open repository: \d\work\projects\proj
> git status -z -u
> git rev-parse --show-toplevel
fatal: Not a git repository (or any parent up to mount point /d)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).