Fix temp dir switching issue and naming in scan repo flow

[eranturgeman]

• All tests passed. If this feature is not already covered by the tests, I added new tests.
• This pull request is on the dev branch.
• I used gofmt for formatting the code before submitting the pull request.
• Update documentation about new features / new supported technologies

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This PR fixes 2 things:

1. names of functions that were incorrect/ not very clear
2. potential bug that can cause the utilized gitManager to point its local git repository (.git) to a deleted repo, leaving it in an invalid state
   Explanation: Since we can iterate several branches in scan-repo, for each branch we work in a temp dir and return to the original dir at the end. When returning to the original dir we set the cur wd to the original dir and delete the temp one. I noticed that we missed setting the .git repo to the original on. This may cause if some failure happens to leave the gitManager pointing to a .git repository that no longer exists

[github-actions]

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