If fork already exists, it fails to fork and times out

[silvester-pari]

Example: a user tries to start a session for repository /organization/foo-fork-2, which is a fork of organization/foo-original. But he already in the past created a fork for a different fork /organization/foo-fork-1. So in git-clerk it tries to create a fork, but fails to do so, and after some time it says: Failed to retrieve forked repository after 3 attempts