Re: Worktree silently deleted on git fetch/gc/log

> A (branch master) and
> B (branch g) which is a worktree of the first.
>
> /git/B g>$ git fetch
> [...]
> From https://...
>    13e4c55a0..02655d5fb  g -> origin/g
>    c37a3ca25..bc7888511  master -> origin/master
> Auto packing the repository in background for optimum performance.
> See "git help gc" for manual housekeeping.
> /git/B g<>$ git log -p origin/g
> fatal: Not a git repository: /git/A/.git/worktrees/B
> /git/B$
>
> Please note that on the second last prompt there is <>, so that git-prompt
> has found the neccessary information and this was this was later deleted -
> by 'gc' or 'log'.
>
> What would be the procedure to restore the /git/A/.git/worktrees/B
> structure?