OCM-7614 | fix: Get the merged commit but not the pull request commit

[yasun1]

The output is like:
The lastest commit updates the test: 11111|11112|21111|21112

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 23.51%. Comparing base (465a422) to head (ac79e7e).
Report is 26 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1965      +/-   ##
==========================================
+ Coverage   23.22%   23.51%   +0.29%     
==========================================
  Files         136      137       +1     
  Lines       21160    22310    +1150     
==========================================
+ Hits         4914     5247     +333     
- Misses      15879    16653     +774     
- Partials      367      410      +43     

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[yasun1]

@ciaranRoche @hunterkepley Please help review. Thanks.

[ciaranRoche]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ciaranRoche, yasun1

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[openshift-ci]

@yasun1: all tests passed!

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