Stuck in a git rebase ... how to reset

I am part way through a git rebase and I am stuck. I can't remember exactly what happened but I was using a UI and deleted a checked-out branch and things just seemed to go blank. I restarted and managed to do a bit of other work creating and committing to other branches etc but then I noticed a status saying I was still in the middle of a rebase

If I try

git rebase --skip
git rebase --continue
git rebase --abort

each fail with

error: could not read '.git/rebase-merge/head-name': No such file or directory

Is there a way I can get back to a stable state? I'm really not bothered about what the rebase related to so am not trying to get back to point where I am still in the middle of the rebase.

Edit:

$ git status
On branch fix/SJW-01225
Your branch is up to date with 'core-v3/fix/SJW-01225'.

You are currently rebasing.
(all conflicts fixed: run "git rebase --continue")

Untracked files:
(use "git add <file>..." to include in what will be committed)

     [long list of untracked files]

nothing added to commit but untracked files present (use "git add" to track)

Edit-1:

$ touch .git/rebase-merge/head-name

$ git rebase --abort
error: could not read '.git/rebase-merge/onto': No such file or directory

$ touch .git/rebase-merge/onto

$ git rebase --abort
error: could not get 'onto': ''

Thx

To escape from corrupted git rebase you can do the following

1. Reset to a known state. You can find out from which commit you started your rebase with git reflog.

For example, reflog will give you the following. The rebase starting point is the last rebase (start) or rebase -i (start) if you did an interactive rebase. Here it is HEAD@{1}:

$ git reflog
f10ccfed (HEAD) HEAD@{0}: rebase : fast-forward
383aa038 (origin/master, origin/HEAD) HEAD@{1}: rebase (start): checkout HEAD~10
0600cf7e (origin/Files, master, Files) HEAD@{4}: checkout: moving from master to Files
0600cf7e (origin/Files, master, Files) HEAD@{5}: commit: fixes
f10ccfed (HEAD) HEAD@{6}: commit: refactoring

So what you need is:

git checkout master # assuming you were on master
git reset --hard HEAD@{1}

2. Remove the rebase-merge folder

rm -rf .git/rebase-merge

git rebase --quit worked for me.