: refs/remotes/heroku/master does not point to a valid object! code example

Example: error: refs/remotes/origin/PLAT-4366 does not point to a valid object!

git gc
git fsck --full
git reflog expire --expire=0 --all
git update-ref -d 0d998c99b6d01e8aabca72b1934802acf90b8fc9
git gc --aggressive
git remote update --prune