ambiguous argument 'HEAD' 에러

문제 발생 상황

• git reset HEAD 명령을 쳐서 git add 기록을 unstaged 상태로 되돌리려는 상황에서 다음과 같은 에러가 발생했다.

fatal: ambiguous argument 'HEAD': unknown revision or path not in the working tree.

문제 원인

해결 방법

• git update-ref -d HEAD
• Do not use rm -rf .git or anything like this as this will completely wipe your entire repository including all other branches as well as the branch that you are trying to reset.

참고 자료

• https://github.com/microsoft/vscode/issues/44776
• https://stackoverflow.com/questions/6632191/how-to-revert-initial-git-commit