they were always re-downloading every time.
i've basically re-written most of xbmkget.
there was some erroneous conditions under which
it wrongly deleted the cached file, resulting in
it being downloaded again.
Signed-off-by: Leah Rowe <leah@libreboot.org>
it now handles more than just git, and i forsee
it handling even more in the future, e.g. rsync,
ftp, bittorrent.
Signed-off-by: Leah Rowe <leah@libreboot.org>