Imports gopkg.in/src-d/go-git.v4/plumbing gopkg.in/src-d/go-git.v4/plumbing/cache gopkg.in/src-d/go-git.v4/plumbing/format/idxfile gopkg.in/src-d/go-git.v4/plumbing/storer gopkg.in/src-d/go-git.v4/utils/binary gopkg.in/src-d/go-git.v4/utils/ioutil Standard library imports bufio bytes compress/zlib crypto/sha1 errors fmt hash hash/crc32 io io/ioutil sort sync