Random exception - this remote has never connected

[jsnmc]

I am seeing this about 1 out 5 builds - pulled code about 3 days ago.

09:55:04 INFO [04/07/17 13:55:04:00] No local branch pointing at the commit '2b1dc29648bd4225b34a281cd0626df2f70ff596'. Fake branch needs to be created.
09:55:04 INFO [04/07/17 13:55:04:00] Fetching remote refs to see if there is a pull request ref
09:55:04 INFO [04/07/17 13:55:04:13] End: Normalizing git directory for branch '' (Took: 2,791.89ms)
09:55:04 ERROR [04/07/17 13:55:04:17] An unexpected error occurred:
09:55:04 LibGit2Sharp.LibGit2SharpException: this remote has never connected
09:55:04 at LibGit2Sharp.Core.Ensure.HandleError(Int32 result)
09:55:04 at LibGit2Sharp.Core.Proxy.git_remote_ls(Repository repository, RemoteHandle remote)
09:55:04 at LibGit2Sharp.Network.ListReferencesInternal(String url, CredentialsHandler credentialsProvider)
09:55:04 at GitTools.Git.GitRepositoryHelper.GetRemoteTipsForAnonymousUser(Repository repo, Remote remote)
09:55:04 at GitTools.Git.GitRepositoryHelper.CreateFakeBranchPointingAtThePullRequestTip(Repository repo, AuthenticationInfo authentication)
09:55:04 at GitTools.Git.GitRepositoryHelper.NormalizeGitDirectory(String gitDirectory, AuthenticationInfo authentication, Boolean noFetch, String currentBranch)
09:55:04 at GitVersion.GitPreparer.Initialise(Boolean normaliseGitDirectory, String currentBranch)
09:55:04 at GitVersion.ExecuteCore.ExecuteGitVersion(String targetUrl, String dynamicRepositoryLocation, Authentication authentication, String targetBranch, Boolean noFetch, String workingDirectory, String commitId, Config overrideConfig, Boolean noCache)
09:55:04 at GitVersion.SpecifiedArgumentRunner.Run(Arguments arguments, IFileSystem fileSystem)
09:55:04 at GitVersion.Program.VerifyArgumentsAndRun()

[jsnmc]

I tracked down the cause to a detached head. This case was random for some reason - In Jenkins, the Bitbucket plugin would sometimes in into this state. I now added code to check for detached head and force a full clone.

[asbjornu]

Hm. If this is something we can detect in GitVersion, it would be good to give a better error message than what LibGit2Sharp is giving here. I'm glad you figured it out, though.