Click on the 🔗 button.
The link will look like https://colab.research.google.com/drive/<xyz>#scrollTo=<abc>.
https://colab.research.google.com/drive/<xyz>#scrollTo=<abc>
Now while inserting link, use only the #scrollTo=<abc> part.
#scrollTo=<abc>
Video: https://imgur.com/a/10w3rzk