Hi rishi and welcome to the website
Here in the UK the previous model (early 2017 and before) had the option of a rear mounted spare, £125 was the cost, if I remember, I had that on my red 2016 Ecosport which was built in India. Look at the avatar picture to your left, shows my red Ecosport. I now have a blue face-lift 2019 Ecosport built in mainland Europe, and the spare is in the boot.
India tends to have a lot more aftermarket items and add-ons for the Ecosport, as its a big market there and also still manufactured there as well, and they like to modify their Ecosports with extra car accessories.