Git autofix

[wfjsw]

Description

• Attempt to fix the workspace if git checkout fails.

Screenshots/videos:

Checklist:

• I have read contributing wiki page
• I have performed a self-review of my own code
• My code follows the style guidelines
• My code passes tests

[AUTOMATIC1111]

One obvious thing is that some code here is copy-pasted and should be put into a function instead...

Otherwise, we are running those two git commands here whenever any exception occurs. Do they fix any possible problem?

[wfjsw]

It fixes problems caused by:

• missing objects
• broken packfile
• possibly broken ref

that's frequently seen during a power failure (or some hard drive problem)

I'm aware that there is a fair amount of copy-pasty but not sure how to improve (lambda probably?)

[wfjsw]

An alternative way would be removing the folder from repositories altogether and attempt a re-clone. still better than doing nothing imo.