Revert "worker: change the way of fetching repos by name (#38800)"
Created by: keegancsmith
This reverts commit 57520dd2ad3769375f7e93a2c4a6898376403f5f. The value used for "ServiceID"/"extSvcID" was incorrect. It isn't the sourcegraph database ID, but rather something like the URL. EG for my local setup the value is "http://bitbucket:7990/".
In all my testing today I was testing against the 3.41 branch which doesn't contain this commit. I did some testing on main today and noticed this issue.
Test Plan: The explicit bitbucket API works again.