How do I
"Save" a git stash and store it away long terms such that I can access it in the future (perhaps save it in some patch file) even after the stash itself is cleared. IE. how do I save a certain stash into a file such that I can clear the current stashes and that nothing will show up if I do git stash list and yet I will still be able to access the saved stash revision in the future if I want to
You asked for a file, but I would use git to save the change set -- much easier to keep track of than a file.
Create a new branch
git checkout -b saved_stash
pop the stash, add and commit
git stash pop
git add .
git commit -m 'save stash for later'
When you want to use it again checkout the branch, reset the commit and add to stash again
git checkout saved_stash
git reset --soft HEAD~1
git stash
At this point you should have the same stash state you originaly saved.
(typed on the run, commands may be off slightly -- I hope only slightly)