Recovering added/staged file after doing git reset --hard HEAD^?

Question

I added a new file F1 and made changes to another file F2 but then did a "git reset --hard HEAD^" and I have lost all the changes to the files.

Is there

Answer 1

You can (with some work) recover state of file at the last "git add ". You can use

$ git fsck --cache --no-reflogs --lost-found --dangling HEAD

and then examine files in '.git/lost-found/other' directory.

Please read git fsck manpage.