Since we know that github archives which are automatically generated have a
tendency to change their checksums[1], switch to using a git clone.
[1] http://lists.openembedded.org/pipermail/openembedded-devel/2017-September/114916.html
Signed-off-by: Trevor Woerner <twoerner@gmail.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
(cherry picked from commit dd803999931f883b3df97a8c35550a3fc8cd482b)
Signed-off-by: Armin Kuster <akuster808@gmail.com>