It does, because the Indo-Europeans expanded into India - and primarily because it originally was a language group including Sanskrit before being considered an ethnic group. The population originated in the Pontic-Caspian Steppe, in modern-day Ukraine and Russia.
Haplogroups R1a and R1b are the most common in Europe are identified with the ancient Indo-Europeans.
Of course, R1a's map does have a large presence in India, but that's due to the genetic imprint of the Indo-Europeans who conquered, and eventually mixed, into the population. It's almost exclusively found in upper-caste Brahmins.
en.wikipedia.org
The Yamnaya in particular are associated with R1b, and are considered (one of) the original PIE cultures before their expansion.
In addition, Steppe ancestries are associated with blonde hair.
The Holocene (beginning around 12,000 years ago) encompassed some of the most significant changes in human evolution, with far-reaching consequences for the dietary, physical and mental health of present-day populations. Using a dataset of more than 1,600 imputed ancient genomes<SUP>1</SUP>, we...
ui.adsabs.harvard.edu
Similarly, blue eyes have been traced to the "north-west part of the Black Sea region"... sounds familiar?
Everyone with blue eyes alive today – from Angelina Jolie to Wayne Rooney – can trace their ancestry back to one person who probably lived about 10,000 years ago in the Black Sea region, a study has found.
www.independent.co.uk