[WIP] [3006.x] Fix failure to fetch latest pillar data after being updated in git pillar repo branch

[dmurphy18]

What does this PR do?

Resolve cache refresh issue with git pillar

What issues does this PR fix or reference?

Fixes https://github.com/saltstack/salt/issues/65467

Previous Behavior

Pillar not updated with git pillar if '/' is part of the name when changes are made

New Behavior

Pillar is updated with git pillar if '/' is part of the name when changes are made

Merge requirements satisfied?

[NOTICE] Bug fixes or features added to Salt require tests.

• [ ] Docs
• [X] Changelog - https://docs.saltproject.io/en/master/topics/development/changelog.html
• [X] Tests written/updated

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Yes Please review Salt's Contributing Guide for best practices, including the PR Guidelines.

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