BitBucket import times out, how to debug why?

ZD ticket: https://gitlab.zendesk.com/agent/tickets/115527

This issue with timeouts leads to https://gitlab.com/gitlab-org/gitlab-ce/issues/58623

We'd see the repo time out after 7000 seconds. Why? Where can we learn more:

2019-03-05_20:36:48.79444 2019-03-05T20:36:48.794Z 26512 TID-ou035id8k RepositoryImportWorker JID-a9b93b155fd0ef9ecd03ebab INFO: start

2019-03-05_22:34:58.27900 2019-03-05T22:34:58.278Z 26512 TID-ou08oibfk WARN: Work still in progress [#<struct Sidekiq::BasicFetch::UnitOfWork queue="queue:repository_import", job="{\"class\":\"RepositoryImportWorker\",\"args\":[290],\"retry\":5,\"queue\":\"repository_import\",\"backtrace\":5,\"status_expiration\":54000,\"jid\":\"a9b93b155fd0ef9ecd03ebab\",\"created_at\":1551818208.7930365,\"correlation_id\":\"pxPdcSTmna8\",\"enqueued_at\":1551818208.7934558}">]

2019-03-05_22:34:58.33934 2019-03-05T22:34:58.339Z 26512 TID-ou035id8k RepositoryImportWorker JID-a9b93b155fd0ef9ecd03ebab INFO: fail: 7089.545 sec

@dblessing I feel like you might have insight

also @Mduren as the affected party.