diff --git a/src/vs/workbench/api/common/extHostSCM.ts b/src/vs/workbench/api/common/extHostSCM.ts
index 77d142d2bd6..83739e744dd 100644
--- a/src/vs/workbench/api/common/extHostSCM.ts
+++ b/src/vs/workbench/api/common/extHostSCM.ts
@@ -516,6 +516,7 @@ class ExtHostSourceControl implements vscode.SourceControl {
 		}
 
 		this._proxy.$registerGroups(this.handle, groups, splices);
+		this.createdResourceGroups.clear();
 	}
 
 	@debounce(100)