* Add a libgit2 fuzzer for the `git fetch` client
* Use a fresh remote each time
* Build fewer things, use fewer deps
* no ssh, either
* Add a corpus with one file.
Slightly tweaked network dump of a `git clone` on a tiny repo.
* auto_ccs is a list
* Rename the fuzzer
* only email in project.yaml
* Use `master`
I had left in a `-b oss-fuzz` from testing off my fork
Nelson Elhage