macOS Build: "The 'Microsoft.Build.Tasks.Git.LocaleteRepository" task failed unexpectedly

Occured when building this repo

Using Visual studio for Mac (Community) 7.6.7 (build 49)

my environment:

.NET Core SDK (reflecting any global.json):
 Version:   2.1.402
 Commit:    3599f217f4

Runtime Environment:
 OS Name:     Mac OS X
 OS Version:  10.13
 OS Platform: Darwin
 RID:         osx.10.13-x64
 Base Path:   /usr/local/share/dotnet/sdk/2.1.402/

Host (useful for support):
  Version: 2.1.4
  Commit:  85255dde3e

.NET Core SDKs installed:
  2.0.0 [/usr/local/share/dotnet/sdk]
  2.1.4 [/usr/local/share/dotnet/sdk]
  2.1.302 [/usr/local/share/dotnet/sdk]
  2.1.402 [/usr/local/share/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.2 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.4 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.2 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.4 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.4 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

The error:

 The "Microsoft.Build.Tasks.Git.LocateRepository" task failed unexpectedly.
 System.TypeInitializationException: The type initializer for 'Microsoft.Build.Tasks.Git.TaskImplementation' threw an exception. ---> System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Build.Tasks.Git.Operations' or one of its dependencies
   at System.AppDomain.Load (System.Reflection.AssemblyName assemblyRef, System.Security.Policy.Evidence assemblySecurity) [0x001a9] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-02/external/bockbuild/builds/mono-x64/mcs/class/corlib/System/AppDomain.cs:777 
   at (wrapper remoting-invoke-with-check) System.AppDomain.Load(System.Reflection.AssemblyName,System.Security.Policy.Evidence)
   at System.AppDomain.Load (System.Reflection.AssemblyName assemblyRef) [0x00000] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-02/external/bockbuild/builds/mono-x64/mcs/class/corlib/System/AppDomain.cs:714 
   at (wrapper remoting-invoke-with-check) System.AppDomain.Load(System.Reflection.AssemblyName)
   at System.Reflection.Assembly.Load (System.Reflection.AssemblyName assemblyRef) [0x00000] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-02/external/bockbuild/builds/mono-x64/mcs/class/corlib/System.Reflection/Assembly.cs:600 
   at Microsoft.Build.Tasks.Git.TaskImplementation..cctor () [0x0006b] in /_/src/Microsoft.Build.Tasks.Git/TaskImplementation.cs:32 
    --- End of inner exception stack trace ---
   at Microsoft.Build.Tasks.Git.LocateRepository.Execute () [0x0000f] in /_/src/Microsoft.Build.Tasks.Git/LocateRepository.cs:27 
   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute () [0x00023] in /_/src/Build/BackEnd/TaskExecutionHost/TaskExecutionHost.cs:631 
   at Microsoft.Build.BackEnd.TaskBuilder+<ExecuteInstantiatedTask>d__26.MoveNext () [0x00212] in /_/src/Build/BackEnd/Components/RequestBuilder/TaskBuilder.cs:787 
Done building project "JsonApiDotNetCore.csproj" -- FAILED.

[Cheesebaron]

This is also happening when trying to build MvvmCross on macOS although the stack trace seems to be a bit different:

The "Microsoft.Build.Tasks.Git.LocateRepository" task failed unexpectedly.
System.BadImageFormatException: Method has no body
File name: 'LibGit2Sharp'
  at LibGit2Sharp.Core.Proxy.git_buf_free (LibGit2Sharp.Core.Handles.GitBuf buf) [0x00000] in <06ab184b4ccd4259a7a7af2756f77645>:0 
  at LibGit2Sharp.Core.Handles.GitBuf.Dispose () [0x00000] in <06ab184b4ccd4259a7a7af2756f77645>:0 
  at LibGit2Sharp.Core.Proxy.ConvertPath (System.Func`2[T,TResult] pathRetriever) [0x0002e] in <06ab184b4ccd4259a7a7af2756f77645>:0 
  at LibGit2Sharp.Core.Proxy.git_repository_discover (LibGit2Sharp.Core.FilePath start_path) [0x00005] in <06ab184b4ccd4259a7a7af2756f77645>:0 
  at LibGit2Sharp.Repository.Discover (System.String startingPath) [0x00006] in <06ab184b4ccd4259a7a7af2756f77645>:0 
  at Microsoft.Build.Tasks.Git.GitOperations.LocateRepository (System.String directory) [0x00000] in /_/src/Microsoft.Build.Tasks.Git.Operations/GitOperations.cs:24 
  at Microsoft.Build.Tasks.Git.RepositoryTasks.LocateRepository (Microsoft.Build.Tasks.Git.LocateRepository task) [0x00000] in /_/src/Microsoft.Build.Tasks.Git.Operations/RepositoryTasks.cs:50 
  at Microsoft.Build.Tasks.Git.LocateRepository.Execute () [0x00038] in /_/src/Microsoft.Build.Tasks.Git/LocateRepository.cs:32 
  at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute () [0x00023] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/msbuild-15/src/Build/BackEnd/TaskExecutionHost/TaskExecutionHost.cs:573 
  at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask (Microsoft.Build.BackEnd.ITaskExecutionHost taskExecutionHost, Microsoft.Build.BackEnd.Logging.TaskLoggingContext taskLoggingContext, Microsoft.Build.BackEnd.TaskHost taskHost, Microsoft.Build.BackEnd.ItemBucket bucket, Microsoft.Build.BackEnd.TaskExecutionMode howToExecuteTask) [0x001f6] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/msbuild-15/src/Build/BackEnd/Components/RequestBuilder/TaskBuilder.cs:784 

[tmat]

If you’re building on Mono that’s a different issue: https://github.com/dotnet/sourcelink/issues/155