[bburky]

While strace is awesome in general, git has some very useful debug environment variables: GIT_TRACE, GIT_TRACE_PACKET, GIT_CURL_VERBOSE and a few more[1].

Try:

    GIT_TRACE_PACKET=1 GIT_TRACE=1 git push

[1] https://git-scm.com/book/en/v2/Git-Internals-Environment-Var...