git push fails - fatal: the remote end hung up unexpectedly

Question

I created a git repo locally. When I try to push to github, I get:

Warning: Permanently added the RSA host key for IP address '140.82.112.4' to the list of known hosts.
Enumerating objects: 47, done.
Counting objects: 100% (47/47), done.
Delta compression using up to 8 threads
Compressing objects: 100% (39/39), done.
Writing objects: 100% (47/47), 756.22 KiB | 9.11 MiB/s, done.
Total 47 (delta 7), reused 0 (delta 0), pack-reused 0
send-pack: unexpected disconnect while reading sideband packet
fatal: the remote end hung up unexpectedly
client_loop: send disconnect: Broken pipe

When I run git remote -v:

origin  git@github.com:crwils/react_unit_and_cypresstesting.git (fetch)
origin  git@github.com:crwils/react_unit_and_cypresstesting.git (push)

Tried increasing the git buffer size:

git config --global http.postBuffer 157286400

Based on various other, similar issues/solutions found on here, I've also tried:

• git repack
• deleting and creating a new SSH Key
• deleting the .git file and reinitializing the repo then pushing
• deleting the .git file, moving all files to new folder, initializing a new repo locally, then pushing to a new remote repo on github
• changing to a different internet connection

This just started happening with some existing as well as new repo's, but not others, no theme apparent.

Can anybody help please?

Answer 1

This was happening for me because the remote Github branch I had branched off was deleted and the corresponding pull request had been merged into main and closed.

Fixed by rebasing on main & doing another git push.

Answer 2

I've been through the ringer with this one on multiple versions of windows. It only occurs on my laptop, and over wifi. The only solution I found working, after trying every command line solution on stackoverflow is to figure out your exact wireless card model, and downloading the latest drivers for it. Uninstall the device and remove original driver before attempting.

Good luck!

Answer 3

The only solution for this was to use HTTPS first, then switch to SSL e.g.

git remote set-url origin [HTTPS: https://github.com/username/your-repo-name]
git remote set-url origin [SSH: git@github.com:username/your-repo-name]

Answer 4

Check first if using HTTPS instead of SSH would work: that would isolate the issue on SSH port 22.

cd /path/to/react_unit_and_cypresstesting
git remote set-url https://github.com/crwils/react_unit_and_cypresstesting.git
git push

You will have to enter your GitHub username/password, but they can be cached in a credential helper.