use new index format for repository tests
use new index format for repository tests

restic/restic,restic/restic,kurin/restic,ar-jan/restic,arithmetric/restic,jayme-github/restic,jayme-github/restic,middelink/restic,howeyc/restic,mappu/restic,ar-jan/restic,ckemper67/restic,stuertz/restic,fawick/restic,bchapuis/restic,stuertz/restic,episource/restic,byo/restic,byo/restic,middelink/restic,fawick/restic,kurin/restic