As pinged on IRC, the first stage would like to have %clamp_mtime_to_source_date_epoch to be enabled in the staging project, I enabled %clamp_mtime_to_source_date_epoch Y on Factory staging O[1], this staging got re-bootstrapped and everything rebuilt, there are 38 build failures(ignore obs-build ones) so far. [1] https://build.opensuse.org/project/show/openSUSE:Factory:Staging:O