Anojan Sivarasa faces execution after he was found guilty of blasphemy over a Facebook comment.
The revised proposal depicts a burial ground on 1.73 hectares (4.32 acres) of land in Sutton.
The annual event will be held on Sunday at the Mosque in Gladstone Street.
Police are treating it as racially aggravated criminal damage until evidence suggests otherwise.
Zeshan Hamdani speaks out after push back against New York Mayor Zohran Mamdani, who is Muslim, attending 9/11 events.
Between January and June this year, there were 1,031 reports of incidents, a monitoring body says.
As Japan increasingly relies on foreign workers, it is also grappling with how to integrate new cultures and religions.
More than 50,000 Muslims from around the world are expected at the Jalsa Salana at the weekend.
Sir Mark Rowley sought to reassure worshippers during a visit to Sutton Central Mosque.
