'Fatal: cherry-pick failed' with Git

Question

I was working on a branch X. I made a commit and pushed it.

Then I wanted to cherry-pick it to branch Y. But due to some unmerged files present, I got the following message:

error: 'cherry-pick' is not possible because you have unmerged files.
hint: Fix them up in the work tree,
hint: and then use 'git add/rm <file>' as
hint: appropriate to mark resolution and make a commit,
hint: or use 'git commit -a'.
fatal: cherry-pick failed

Now, I just want to delete my branch Y, then re-create the branch Y and then want to manually edit the file where I was trying to cherry-pick.

Currently, I'm unable to delete the branch as it is my working branch. I cannot checkout any other branch. I'm getting the following error on trying to change the branch.

mod/assign/locallib.php: needs merge
error: you need to resolve your current index first

I just need to delete the branch Y, without losing anything on branch X.

EDIT #1

I edited the file mod/assign/locallib.php

On doing git status, I get:

# On branch MDL-38267_24
# Unmerged paths:
#   (use "git add/rm <file>..." as appropriate to mark resolution)
#
#   both modified:      mod/assign/locallib.php
#

What file should I add in git add .. ?

Answer 1

Since you have already edited the conflict file, you just need

git add mod/assign/locallib.php

then

git cherry-pick --continue

Answer 2

You attempted to do a merge (via either git merge or git pull) and have files that have conflicts that are not resolved. If you do git status, you will likely see file(s) listed as being 'changed by both'. You need to take care of this before you do anything else.

Do git mergetool and it will bring up the files one at a time. Fix the file so that the conflicts are resolved and then you should be able to proceed.