sync: skip listing on dst in force mode

[davies]

close #4598

[codecov]

Codecov Report

Attention: Patch coverage is 31.81818% with 15 lines in your changes are missing coverage. Please review.

Project coverage is 55.46%. Comparing base (c8e8296) to head (847cafa).
Report is 2 commits behind head on main.

Files	Patch %	Lines
pkg/sync/sync.go	31.81%	14 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4602      +/-   ##
==========================================
- Coverage   55.57%   55.46%   -0.11%     
==========================================
  Files         159      124      -35     
  Lines       42940    33760    -9180     
==========================================
- Hits        23862    18726    -5136     
+ Misses      16422    12842    -3580     
+ Partials     2656     2192     -464     

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