bug: Missing tag for 6.2.1

### SDK

Node

### Which version?

6.2.1

### What's your use case?

I need to fork this repo to fix a bug, but can't find the tag for version 6.2.1. Where does this version come from?

### What happened?

In order to fix a critical bug, I need to modify the javascript SDK. The current official version is 6.2.1 but I can't find this tag.

### Relevant log output

```shell
N/A
```