diff --git a/extensions/git/src/util.ts b/extensions/git/src/util.ts
index 668dcf56fdc..b3907504abf 100644
--- a/extensions/git/src/util.ts
+++ b/extensions/git/src/util.ts
@@ -149,6 +149,16 @@ export async function mkdirp(path: string, mode?: number): Promise<boolean> {
 	return true;
 }
 
+export async function createOrAppendFile(path: string, data: string, options?: any): Promise<boolean> {
+	try {
+		await nfcall(fs.appendFile, path, data, options);
+	} catch (err) {
+		throw new Error(`Not able to append data in file '${path}'`);
+	}
+
+	return true;
+}
+
 export function uniqueFilter<T>(keyFn: (t: T) => string): (t: T) => boolean {
 	const seen: { [key: string]: boolean; } = Object.create(null);