fix(promotions): only check revision match sync result if found

[hiddeco]

Fixes: #1922

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 45.67%. Comparing base (af4feb5) to head (33aff28).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1923      +/-   ##
==========================================
+ Coverage   45.58%   45.67%   +0.08%     
==========================================
  Files         235      235              
  Lines       15793    15824      +31     
==========================================
+ Hits         7199     7227      +28     
- Misses       8240     8241       +1     
- Partials      354      356       +2     

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