Quick answer

Set up GitHub authentication in Termux using HTTPS tokens or SSH keys without confusing it with normal passwords.

This page separates the real GitHub SSH/Auth cause from noise in the terminal output.

For GitHub SSH/Auth, focus on GitHub and Git workflow and use the output to decide the next small fix instead of reinstalling everything.

What to check

Use the guide for GitHub SSH/Auth only after one short command can reproduce the problem.
For GitHub SSH/Auth, keywords that usually matter are: GitHub, SSH, Auth.
If the first command for GitHub SSH/Auth gives a different error, follow the new clue instead of forcing this guide.

For GitHub SSH/Auth, replace placeholders only when they appear in the command.

pkg install openssh git -y
ssh-keygen -t ed25519 -C "you@example.com"
cat ~/.ssh/id_ed25519.pub
ssh -T git@github.com

pkg install openssh git -y — installs the package that the command or script depends on for GitHub SSH/Auth.
ssh-keygen -t ed25519 -C "you@example.com" — checks the part of the GitHub and Git workflow workflow that usually causes this issue for GitHub SSH/Auth.
cat ~/.ssh/id_ed25519.pub — checks the part of the GitHub and Git workflow workflow that usually causes this issue for GitHub SSH/Auth.
ssh -T git@github.com — checks the part of the GitHub and Git workflow workflow that usually causes this issue for GitHub SSH/Auth.

Change one thing at a time while testing GitHub SSH/Auth.
If the GitHub SSH/Auth error changes, read the new clue instead of repeating the old fix.
Keep screenshots or copied terminal text for GitHub SSH/Auth; they make paid help faster if you need it.

Running the GitHub SSH/Auth command from the home folder when the project is somewhere else.
Following a desktop Linux answer that ignores Android storage paths while fixing GitHub SSH/Auth.
Closing Termux before copying the output that explains GitHub SSH/Auth.

If github ssh/auth GitHub still blocks the upload or clone, use the Store and send the command, the branch name, and the full terminal output.