brp-set-epoch-timestamp

#!/bin/sh

# If using normal root, avoid changing anything.
if [ -z "$RPM_BUILD_ROOT" ] || [ "$RPM_BUILD_ROOT" = "/" ]; then
  exit 0
fi

find "$RPM_BUILD_ROOT" -print0 | xargs -0 touch -h -d "@${SOURCE_DATE_EPOCH:-1549052798}" || :