speed up tip needed for git bisect

[Yasushi SHOJI]

Hi,

When I need to git bisect the guile proper, it takes some time to
re-build .go files.
Thus, it's pretty time consuming to find the bad commit.
Does anyone have any good tip to speed this process up?

I know that tarballs are shipped with pre-built binaries but that doesn't help
while bisecting AFAIK.

Thanks,
-- 
            yashi