git-tfs error

error.txt

git tfs -d clone http://myServer:8080/tfs/myProject '$/Donor/Online Registration/Main' . --branches=auto

Looking for changeset 22351 in git repository...
 => Commit not found!
Looking for root changeset for branch:$/Donor/Online Registration/Dev/Dev1
Looking to find branch '$/Donor/Online Registration/Dev/Dev1' in all TFS branches...
Looking for all branches...
Found parent branch : $/Donor/Online Registration/Main
Cleaning...
Sep.Git.Tfs.Core.GitTfsException: error: a problem occurred when trying to clone the repository. Try to solve the proble
m described below.
In any case, after, try to continue using command `git tfs fetch`
 ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Sep.Git.Tfs.VsCommon.TfsHelperBase.<GetMergeInfo>b__37(ExtendedMerge x)
   at System.Linq.EnumerableSorter`2.ComputeKeys(TElement[] elements, Int32 count)
   at System.Linq.EnumerableSorter`1.Sort(TElement[] elements, Int32 count)
   at System.Linq.OrderedEnumerable`1.<GetEnumerator>d__1.MoveNext()
   at Sep.Git.Tfs.VsCommon.TfsHelperBase.GetMergeInfo(String tfsPathBranchToCreate, String tfsPathParentBranch, Int32 fi
rstChangesetInBranchToCreate, Int32 lastChangesetIdToCheck)
   at Sep.Git.Tfs.VsCommon.TfsHelperBase.GetRootChangesetForBranch(IList`1 rootBranches, String tfsPathBranchToCreate, I
nt32 lastChangesetIdToCheck, String tfsPathParentBranch)
   at Sep.Git.Tfs.VsCommon.TfsHelperBase.GetRootChangesetForBranch(String tfsPathBranchToCreate, Int32 lastChangesetIdTo
Check, String tfsPathParentBranch)
   at Sep.Git.Tfs.Core.GitTfsRemote.InitTfsRemoteOfChangeset(IBranchObject tfsBranch, Int32 parentChangesetId, IRenameRe
sult renameResult)
   at Sep.Git.Tfs.Core.GitTfsRemote.FindOrInitTfsRemoteOfChangeset(Int32 parentChangesetId, Boolean mergeChangeset, IRen
ameResult renameResult, String& omittedParentBranch)
   at Sep.Git.Tfs.Core.GitTfsRemote.FindRemoteAndFetch(Int32 parentChangesetId, Boolean stopOnFailMergeCommit, Boolean m
ergeChangeset, IRenameResult renameResult, String& omittedParentBranch)
   at Sep.Git.Tfs.Core.GitTfsRemote.ProcessMergeChangeset(ITfsChangeset changeset, Boolean stopOnFailMergeCommit, String
& parentCommit)
   at Sep.Git.Tfs.Core.GitTfsRemote.FetchWithMerge(Int32 mergeChangesetId, Boolean stopOnFailMergeCommit, Int32 lastChan
gesetIdToFetch, IRenameResult renameResult, String[] parentCommitsHashes)
   at Sep.Git.Tfs.Core.GitTfsRemote.Fetch(Boolean stopOnFailMergeCommit, Int32 lastChangesetIdToFetch, IRenameResult ren
ameResult)
   at Sep.Git.Tfs.Commands.Fetch.DoFetch(IGitTfsRemote remote, Boolean stopOnFailMergeCommit)
   at Sep.Git.Tfs.Commands.Fetch.FetchRemote(Boolean stopOnFailMergeCommit, IGitTfsRemote remote)
   at Sep.Git.Tfs.Commands.Fetch.Run(Boolean stopOnFailMergeCommit, String[] args)
   at Sep.Git.Tfs.Commands.Clone.Run(String tfsUrl, String tfsRepositoryPath, String gitRepositoryPath)
   --- End of inner exception stack trace ---
   at Sep.Git.Tfs.Util.GitTfsCommandRunner.Run(GitTfsCommand command, IList`1 args)
   at Sep.Git.Tfs.GitTfs.Main(GitTfsCommand command, IList`1 unparsedArgs)
   at Sep.Git.Tfs.Program.Main(String[] args)
error: a problem occurred when trying to clone the repository. Try to solve the problem described below.
In any case, after, try to continue using command `git tfs fetch`

System.NullReferenceException: Object reference not set to an instance of an object.
   at Sep.Git.Tfs.VsCommon.TfsHelperBase.<GetMergeInfo>b__37(ExtendedMerge x)
   at System.Linq.EnumerableSorter`2.ComputeKeys(TElement[] elements, Int32 count)
   at System.Linq.EnumerableSorter`1.Sort(TElement[] elements, Int32 count)
   at System.Linq.OrderedEnumerable`1.<GetEnumerator>d__1.MoveNext()
   at Sep.Git.Tfs.VsCommon.TfsHelperBase.GetMergeInfo(String tfsPathBranchToCreate, String tfsPathParentBranch, Int32 fi
rstChangesetInBranchToCreate, Int32 lastChangesetIdToCheck)
   at Sep.Git.Tfs.VsCommon.TfsHelperBase.GetRootChangesetForBranch(IList`1 rootBranches, String tfsPathBranchToCreate, I
nt32 lastChangesetIdToCheck, String tfsPathParentBranch)
   at Sep.Git.Tfs.VsCommon.TfsHelperBase.GetRootChangesetForBranch(String tfsPathBranchToCreate, Int32 lastChangesetIdTo
Check, String tfsPathParentBranch)
   at Sep.Git.Tfs.Core.GitTfsRemote.InitTfsRemoteOfChangeset(IBranchObject tfsBranch, Int32 parentChangesetId, IRenameRe
sult renameResult)
   at Sep.Git.Tfs.Core.GitTfsRemote.FindOrInitTfsRemoteOfChangeset(Int32 parentChangesetId, Boolean mergeChangeset, IRen
ameResult renameResult, String& omittedParentBranch)
   at Sep.Git.Tfs.Core.GitTfsRemote.FindRemoteAndFetch(Int32 parentChangesetId, Boolean stopOnFailMergeCommit, Boolean m
ergeChangeset, IRenameResult renameResult, String& omittedParentBranch)
   at Sep.Git.Tfs.Core.GitTfsRemote.ProcessMergeChangeset(ITfsChangeset changeset, Boolean stopOnFailMergeCommit, String
& parentCommit)
   at Sep.Git.Tfs.Core.GitTfsRemote.FetchWithMerge(Int32 mergeChangesetId, Boolean stopOnFailMergeCommit, Int32 lastChan
gesetIdToFetch, IRenameResult renameResult, String[] parentCommitsHashes)
   at Sep.Git.Tfs.Core.GitTfsRemote.Fetch(Boolean stopOnFailMergeCommit, Int32 lastChangesetIdToFetch, IRenameResult ren
ameResult)
   at Sep.Git.Tfs.Commands.Fetch.DoFetch(IGitTfsRemote remote, Boolean stopOnFailMergeCommit)
   at Sep.Git.Tfs.Commands.Fetch.FetchRemote(Boolean stopOnFailMergeCommit, IGitTfsRemote remote)
   at Sep.Git.Tfs.Commands.Fetch.Run(Boolean stopOnFailMergeCommit, String[] args)
   at Sep.Git.Tfs.Commands.Clone.Run(String tfsUrl, String tfsRepositoryPath, String gitRepositoryPath)
Object reference not set to an instance of an object.