Remove /home/pmos/git from pmb.config.chroot_home_symlinks, so
pmb.chroot.init.init() will not change the ownership of the
$WORK/cache_git dir.
The symlink was added two years ago in [1] as compatibility to previous
behavior, because the mountpoint of cache_git was changed from
/home/user/git to /mnt/pmbootstrap-git. Forcing the ownership of that
dir to be the pmos user inside the chroot made sense, because the only
cloned repository (aports_upstream) would also be owned by the pmos
user. With the upcoming change to have all cloned repos owned by the
host-system's user, this is just confusing.
The /home/pmos/git symlink does not seem to be used by anybody, it is
not mentioned in the pmbootstrap code and in the wiki.
[1] b4dd7a89 "Close #709: Improve user creation (#725)"
https://github.com/postmarketOS/pmbootstrap/pull/725
cba37d5d79