recover staged or reset files in git (ran git add but somehow discarded without committing)

gistfile1.txt

export UNIQUE_CODE=sops_version   
#from https://stackoverflow.com/a/14988152/13484536
for b in $(git fsck --lost-found | grep blob | awk '{print $3}'); do git cat-file -p $b | grep -q ${UNIQUE_CODE} && echo $b && git cat-file -p $b && echo; done