In case of reabese of repository with submodules, submodules are left in non updatred state and prevent rebase from continuing.

Fixed that by updating submodules after rebase was initialized.

Author: igadmg

LibGit2Sharp/Rebase.cs

@@ -119,6 +119,8 @@ public virtual RebaseResult Start(Branch branch, Branch upstream, Branch onto, I
                                                                                       ontoRefAnnotatedCommitHandle,
                                                                                       gitRebaseOptions))
                 {
+                    this.repository.Submodules.UpdateAll(new SubmoduleUpdateOptions());
+
                     RebaseResult rebaseResult = RebaseOperationImpl.Run(rebaseOperationHandle,
                                                                         this.repository,
                                                                         committer,

LibGit2Sharp/SubmoduleCollection.cs

@@ -70,6 +70,13 @@ public virtual void Init(string name, bool overwrite)
             }
         }
 
+
+        public virtual void UpdateAll(SubmoduleUpdateOptions options)
+        {
+            foreach (var sm in this)
+                Update(sm.Name, options);
+        }
+
         /// <summary>
         /// Update specified submodule.
         /// <para>