[AL-1766] hub.copy fix (2) + small refac

[farizrahman4u]

🚀 🚀 Pull Request

Checklist:

• My code follows the style guidelines of this project and the Contributing document
• I have commented my code, particularly in hard-to-understand areas
• I have kept the coverage-rate up
• I have performed a self-review of my own code and resolved any problems
• I have checked to ensure there aren't any other open Pull Requests for the same change
• I have described and made corresponding changes to the relevant documentation
• New and existing unit tests pass locally with my changes

Changes

[codecov]

Codecov Report

Merging #1644 (38288fa) into main (d1b41e7) will decrease coverage by 0.68%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1644      +/-   ##
==========================================
- Coverage   92.53%   91.84%   -0.69%     
==========================================
  Files         219      219              
  Lines       21164    20859     -305     
==========================================
- Hits        19584    19158     -426     
- Misses       1580     1701     +121     

Flag	Coverage Δ
unittests	91.84% <100.00%> (-0.69%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
hub/core/fast_forwarding.py	71.66% <100.00%> (+7.15%)	⬆️
hub/core/meta/tensor_meta.py	87.33% <100.00%> (-0.34%)	⬇️
hub/api/tests/test_sample_info.py	72.72% <0.00%> (-27.28%)	⬇️
hub/api/tests/test_api_with_compression.py	88.15% <0.00%> (-11.85%)	⬇️
hub/core/compression.py	80.09% <0.00%> (-9.31%)	⬇️
hub/integrations/tf/hubtensorflowdataset.py	66.27% <0.00%> (-7.83%)	⬇️
hub/core/tests/test_compression.py	94.44% <0.00%> (-5.56%)	⬇️
hub/tests/path_fixtures.py	87.21% <0.00%> (-3.25%)	⬇️
hub/tests/storage_fixtures.py	88.88% <0.00%> (-2.23%)	⬇️
hub/core/sample.py	84.21% <0.00%> (-2.09%)	⬇️
... and 66 more

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