fix: untar file error

[shipengqi]

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Please add a summary of your change

fix: untar file error

Does your change fix a particular issue?

Fixes #(issue)

Check list:

• Mark if documentation changes are required.
• Mark if tests were added or updated to cover the changes.

[codecov-commenter]

Codecov Report

Merging #36 (29aba43) into main (a3c204a) will increase coverage by 0.17%.
The diff coverage is 100.00%.

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@@            Coverage Diff             @@
##             main      #36      +/-   ##
==========================================
+ Coverage   71.65%   71.82%   +0.17%     
==========================================
  Files          22       22              
  Lines         963      962       -1     
==========================================
+ Hits          690      691       +1     
+ Misses        198      197       -1     
+ Partials       75       74       -1     

Flag	Coverage Δ
unittests	71.82% <100.00%> (+0.17%)	⬆️

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Files Changed	Coverage Δ
fsutil/tar.go	53.26% <100.00%> (+1.64%)	⬆️

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