Leasehold property,
depending auction conducted where:

NON LACA (high court / land office)
meaning individual strata title completed.
non bumi can buy from bumi owner (non bumi lot unit).

LACA (public auction)
meaning still under master title or individual strata title yet to complete (beware the need to do double transfer)
depend on the developer. need to check with developer.
coz developer hold the title.
developer can still convert bumi owner unit into bumi lot if they suddenly oversell the project to non bumi and fail to meet the bumi quota.
for some project, maybe developer already paid up the penalty to the authority. meaning majority units already being converted into open unit. no longer got bumi quota.
So conclusion, only developer holds the answer to your question if the lelong unit fall under this case.