Delete the tracking branch as well.

[OkazakiTokkatsu]

Description

I would like the tracking branch (remotes/origin/****) removed at the same time.

Steps to reproduce

1. Ensure that the merged branch remains.

   $ git branch -a
   
     some-topic-branch
   * main
     remotes/origin/some-topic-branch
     remotes/origin/HEAD -> origin/main
     remotes/origin/main

2. Run gh-poi

   $ gh-poi
   
   ✔ Fetching pull requests...
   ✔ Deleting branches...
   
   Deleted branches
     Some-topic-branch
       └─ #1  https://github.com/Okako-WebWorks/TicketSystem/pull/***
   
   Not deleted branches
   * main

3. Ensure that the tracking branch remains in place.

   $ git branch -a
   
   * main
     remotes/origin/some-topic-branch
     remotes/origin/HEAD -> origin/main
     remotes/origin/main

4. Run prune

   $ git fetch --prune
   
    - [deleted]         (none)     -> origin/some-topic-branch

5. Now, all branches was cleaned!

   $ git branch -a
   
   * main
     remotes/origin/HEAD -> origin/main
     remotes/origin/main

Perhaps the prune executed here should be done by gh-poi. (The above command may not be sufficient to avoid gh-poi deleting tracking branches other than the one you deleted.)

Additional context

gh version 2.14.3 (2022-07-26) gh poi seachicken/gh-poi v0.5.6

[seachicken]

Thanks for giving me a good feature request. I will check a little more to see if this change has any negative impact.

[seachicken]

I thought pruning was also good for the purpose of this tool to clean up.

I would proceed with the following policy: With --dry-run: Do not pruning Without --dry-run: git remote prune after removing branches (git fetch --prune includes getting remote-tracking branches, so we will proceed without fetch)