blob: minor improvements + test coverage

[jkowalski]

No description provided.

[codecov]

Codecov Report

Merging #1127 (9014778) into master (9397981) will increase coverage by 0.16%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1127      +/-   ##
==========================================
+ Coverage   64.91%   65.08%   +0.16%     
==========================================
  Files         348      348              
  Lines       17256    17270      +14     
==========================================
+ Hits        11202    11240      +38     
+ Misses       4602     4584      -18     
+ Partials     1452     1446       -6     

Impacted Files	Coverage Δ
repo/blob/storage.go	100.00% <100.00%> (+43.90%)	⬆️
internal/units/units.go	66.66% <0.00%> (-11.12%)	⬇️
cli/command_repository_sync.go	69.00% <0.00%> (-1.76%)	⬇️
cli/command_index_recover.go	60.00% <0.00%> (+3.15%)	⬆️
repo/blob/registry.go	100.00% <0.00%> (+14.28%)	⬆️
repo/blob/config.go	100.00% <0.00%> (+28.57%)	⬆️

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