Parses GET /info/refs?service=git-upload-pack.
GET /info/refs?service=git-upload-pack
Tolerates the # service= banner being present or absent (a dumb-HTTP mirror omits it).
# service=
Parses
GET /info/refs?service=git-upload-pack.Tolerates the
# service=banner being present or absent (a dumb-HTTP mirror omits it).