Doom upgrade fails with error : fatal: couldn't find remote ref refs/heads/master [Return code: 128]

### I confirm that...

- [X] I have searched the [issue tracker](https://github.com/doomemacs/doomemacs/issues), [documentation](https://docs.doomemacs.org), [FAQ](https://docs.doomemacs.org/-/faq), [Discourse](https://discourse.doomemacs.org), and [Google](https://google.com), in case this issue has already been reported/resolved.

- [X] I have read "[How to Debug Issues](https://doomemacs.org/d/how2debug)", and will use it to provide as much information about this issue as possible.

- [X] The issue can be reproduced on the **latest** available commit of Doom.

- [X] The issue can be reproduced on a stable release of Emacs, such as 27 or 28. *(Doom does not support development builds like 29+ or any version ending in .50 or .9x)*

### Expected behavior

`doom upgrade` should work without error.

### Current behavior

When I run `doom upgrade`, it fails with the error :
```
$ cd /Users//.emacs.d/.local/straight/repos/emacs-python-black/
$ git fetch origin
fatal: couldn't find remote ref refs/heads/master
[Return code: 128]
```

### Steps to reproduce

1. run `doom upgrade`

### System Information

https://pastebin.com/PXbqcHyB