The orinoco-usb driver has been in the main kernel tree from May 2010 and the sources of orinoco-usb-9999 are no longer fetchable. Please consider this package as obsolete.
commit 0accaeb8219f4a13aa5f750ff64d1b01404abc85 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: Mon Aug 14 09:19:52 2017 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: Mon Aug 14 09:28:16 2017 net-wireless/orinoco-usb: Remove last-rited pkg, #621748 net-wireless/orinoco-usb/metadata.xml | 5 --- net-wireless/orinoco-usb/orinoco-usb-9999.ebuild | 41 ------------------------ profiles/package.mask | 5 ++- 3 files changed, 2 insertions(+), 49 deletions(-)