I was facing problem i.e I was unable to push code on GitHub from home network. Whenever I tried to push or clone code, it was giving below error:
error: RPC failed; result=7, HTTP code = 0
fatal: The remote end hung up unexpectedly
This problem was coming with https protocol. Then I tried to solve problem with another method. I used SSH to fix above error.
How I solved above error?
I used SSH keys instead of https. In this method, you will generate your public key and attach that key with your GitHub account.
Step1: Install OpenSSH:
sudo apt install openssh-server
Step 2: clone repository with ssh:
But it will give below error because you did not generate and connect public key.
Step 3: Generating public/private rsa key pair:
$ ssh-keygen -t rsa -b 4096 -C "firstname.lastname@example.org"
Step 4: List the files and directories in your ssh folder:
$ ls -al ~/.ssh
Step 5: Check that you are connecting to the correct server:
To make sure you are connecting to the right domain, you can enter the following command:
Note the IP address (the numbers within the  brackets). The connection should be made to a GitHub IP address, on port 22.
Step 6: Add your SSH key to the ssh-agent:
Step 7: Verify that you have a private key generated and loaded into SSH. If you’re using OpenSSH 6.7 or older:
$ eval "$(ssh-agent -s)" $ ssh-add -l
Step 8: Add your SSH key to your account:
$ sudo apt-get install xclip $ xclip -sel clip < ~/.ssh/id_rsa.pub
Then add the copied key to GitHub. Go to Settings->SSH keys(Personal settings side bar)->Add SSH key->fill out form(key is on your clipboard, just use ctrl+v)->Add key.
Now you can clone and push code via SSH keys :-). See