Only if you leave the Scheme before you have 2 years membership. In this case, you will receive a refund of your contributions, less your share of the cost of buying you back into the State Second Pension (S2P). Your refund will be subject to pension scheme taxation which is currently 20%.
If you have transferred benefits into the Scheme from a scheme that does not allow a refund of contributions to be paid, you will not be able to take a refund of contributions, even if you have less than a total of 2 years membership.