repo pane: use proper uri for input model

src/vs/workbench/contrib/scm/browser/repositoryPane.ts

@@ -65,6 +65,7 @@ import { format } from 'vs/base/common/strings';
 import { inputPlaceholderForeground } from 'vs/platform/theme/common/colorRegistry';
 import { SuggestController } from 'vs/editor/contrib/suggest/suggestController';
 import { SnippetController2 } from 'vs/editor/contrib/snippet/snippetController2';
+import { Schemas } from 'vs/base/common/network';
 
 type TreeElement = ISCMResourceGroup | IResourceNode<ISCMResource, ISCMResourceGroup> | ISCMResource;
 
@@ -735,7 +736,19 @@ export class RepositoryPane extends ViewPane {
 		this._register(this.inputEditor.onDidFocusEditorText(() => addClass(editorContainer, 'synthetic-focus')));
 		this._register(this.inputEditor.onDidBlurEditorText(() => removeClass(editorContainer, 'synthetic-focus')));
 
-		this.inputModel = this.modelService.createModel('', null, URI.parse('scm:///input'));
+		let query: string | undefined;
+
+		if (this.repository.provider.rootUri) {
+			query = `rootUri=${encodeURIComponent(this.repository.provider.rootUri.toString())}`;
+		}
+
+		const uri = URI.from({
+			scheme: Schemas.vscode,
+			path: `scm/${this.repository.provider.contextValue}/${this.repository.provider.id}/input`,
+			query
+		});
+
+		this.inputModel = this.modelService.createModel('', null, uri);
 		this.inputEditor.setModel(this.inputModel);
 
 		this.inputEditor.changeViewZones(accessor => {