Certainly not a local. Lots of garden escapes in this corner. The proposed species not yet recorded on CNM. Stripes inside flower not visible, see planNet https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Alstroemeria~psittacina.
Saw Alstroemeria flowering in display at Yarralumla nursery 8 days ago in several colour types, probably been a lot of selection for different colour variants for garden use.