How to revert a lost commit?

Question

git

Uncommitted files were stored on the server.
I uploaded a couple of commits from the master on top of them, which turned out to be buggy and rolled back 2 commits.
Then on the local machine corrected all this business. This is how the commit tree in master looks like.

Then I went to the server, made a commit in the HEAD branch and as in the picture.

Now the 'commit work process' commit has disappeared altogether and is not in any branch.
Thanks in advance.

Answer 1

git reflog
Find the point where you haven't done a git pull yet,
git reset --hard <хеш из reflog>