How to fix broken user guix?

[Nathan Dehnel]

bash-5.0$ guix pull
Updating channel 'nonguix' from Git repository at
'https://gitlab.com/nonguix/nonguix'...
guix pull: error: Git error: failed open -
'/home/nathan/.cache/guix/checkouts/l74zueb3lgylhgxnuzx3d5fzraztxvzu2s4466wlqqvmz7hdct3a/.git/FETCH_HEAD'
is locked: Permission denied