I would believe ... plan to buy the ETF, find the number of shares of Tesla integrated into your ETF purchase, and then buy the ETF and short-sell that number of shares of Tesla "simultaneously". Keep checking the composition of the ETF and rebalance your Tesla short, or perhaps also the ETF.

Without fractional shares it might be difficult to get an exact counterbalance, and there will be inconvenient short vs long term capital gains tracking for rebalancing events.

Edit: spelling