Technical guide
Troubleshoot dial tcp: connection refused
Check processes, listening addresses, network namespaces, and firewall rejections when a TCP connection to 127.0.0.1:9443 is refused.
Technical guide
Change the author name and email on multiple Git commits
Correct author information with git filter-repo or interactive rebase, distinguish author from committer, and plan a coordinated history rewrite.
Technical guide
Clone a Git repository with its submodules
Clone nested Git submodules, check out recorded commits, deliberately update dependencies, and configure private-repository access in CI.
Technical guide
Move uncommitted changes from main to a new Git branch
Create a branch at the current commit to keep staged and unstaged work, or use a deliberate stash workflow when the destination starts elsewhere.
Technical guide
Get the current Git commit hash
Resolve HEAD to a full or abbreviated commit ID, handle repositories without a first commit, and label builds without confusing the ID with uncommitted changes.
Technical guide
Inspect the changes saved in a Git stash
Inspect tracked and untracked stash contents, compare saved snapshots, and restore changes for review without accidentally dropping the stash.
Technical guide
Ignore a directory except for one subdirectory in Git
Use ordered .gitignore exceptions to keep one nested directory, diagnose matching rules, and distinguish ignored files from already tracked files.
Technical guide
Git fetch vs. pull: inspect changes before integrating them
Understand what fetch updates, choose an explicit pull strategy, and handle divergent history or uncommitted work without assuming a universal default.
Technical guide
Stop Git from asking for credentials on every push
Configure an HTTPS credential helper or SSH key for GitHub, manage expired tokens, and troubleshoot repeated authentication prompts.
Technical guide
What does Git push do without a branch name?
Understand push.default, remote selection, upstream tracking, and explicit refspecs before relying on a bare git push.
Technical guide
Fix a rejected push after rebasing a feature branch
Understand non-fast-forward pushes after rebase, use an explicit force-with-lease safely, and protect work on shared branches.
Technical guide
Troubleshoot Git push authentication failures
Check HTTPS tokens, SSH keys, cached credentials, repository permissions, and organization SSO when a Git push fails to authenticate.