How to fix github detached HEAD

Detached head means You are no longer at branch. Checked out a single commit in history (in this case, the commit before HEAD, i.e. HEAD).

If you want to delete your changes associated with the detached HEAD

You only need to checkout the branch you were on, e.g.

git checkout master

If you then change the file and want to restore the state in the index, delete the file without deleting it first.

git checkout -- path/to/foo

This will restore the file foo to the state it is in the index.

If you want to keep your changes associated with the detached HEAD

  1. Run git branch tmp - this will save your changes in a new branch called tmp.
  2. Run git checkout master
  3. If you would like to incorporate the changes you made into master, run git merge tmp from the master branch. You should be on the master branch after running git checkout master.