Answer by Abhijeet for How to recover a dropped stash in Git?

Recovered it by using following steps:

1. Identify the deleted stash hash code:

   gitk --all $( git fsck --no-reflog | awk '/dangling commit/ {print $3}' )

2. Cherry Pick the Stash:

   git cherry-pick -m 1 $stash_hash_code

3. Resolve Conflicts if any using:

   git mergetool

Additionally you might be having issues with commit message if you are using gerrit. Please Stash your changes before following next alternatives:

1. Use hard reset to previous commit and then recommit this change.
2. You may also stash the change, rebase and recommit.