Await git.pullFrom and gitt.pushTo to ensure any failures display an error dialog to the user

extensions/git/src/commands.ts

@@ -1333,7 +1333,7 @@ export class CommandCenter {
 
 		const remoteCharCnt = remotePick.label.length;
 
-		repository.pullFrom(false, remotePick.label, branchPick.label.slice(remoteCharCnt + 1));
+		await repository.pullFrom(false, remotePick.label, branchPick.label.slice(remoteCharCnt + 1));
 	}
 
 	@command('git.pull', { repository: true })
@@ -1429,7 +1429,7 @@ export class CommandCenter {
 			return;
 		}
 
-		repository.pushTo(pick.label, branchName);
+		await repository.pushTo(pick.label, branchName);
 	}
 
 	private async _sync(repository: Repository, rebase: boolean): Promise<void> {