style(general): minor followups to #3041

[julio-lopez]

• explicitly pass username and hostname instead of repo writer
• nit: name return values

Follow up to #3041

[codecov]

Codecov Report

Patch coverage: 80.00% and project coverage change: -0.03 ⚠️

Comparison is base (851fe6c) 75.41% compared to head (424685c) 75.39%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3141      +/-   ##
==========================================
- Coverage   75.41%   75.39%   -0.03%     
==========================================
  Files         459      459              
  Lines       36346    36340       -6     
==========================================
- Hits        27409    27397      -12     
- Misses       7025     7030       +5     
- Partials     1912     1913       +1     

Impacted Files	Coverage Δ
cli/command_snapshot_create.go	79.35% <80.00%> (-0.36%)	⬇️

... and 5 files with indirect coverage changes

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