`git pathspec` error when Excel import after doorstop edit

After editing a set of doorstop requirements in Excel, I choose to import the changes.

I get a list of errors:

```
fatal: pathspec 'C:\cygwin\home\robertberrington\observr2rm\specs\ObserVR2-FeatureList\ObsVR2-0127.yml' did not match any files
fatal: pathspec 'C:\cygwin\home\robertberrington\observr2rm\specs\ObserVR2-FeatureList\ObsVR2-0347.yml' did not match any files
fatal: pathspec 'C:\cygwin\home\robertberrington\observr2rm\specs\ObserVR2-FeatureList\ObsVR2-0278.yml' did not match any files
fatal: pathspec 'C:\cygwin\home\robertberrington\observr2rm\specs\ObserVR2-FeatureList\ObsVR2-0305.yml' did not match any files
fatal: pathspec 'C:\cygwin\home\robertberrington\observr2rm\specs\ObserVR2-FeatureList\ObsVR2-0288.yml' did not match any files
```

I'm running Cygwin ... it appears that Cygwin-git is not recognizing the full Windows path, and therefore failing to automate the `git add [file]` command.