Git Commands

git diff -w

git rm file1.txt
git commit -m "remove file1.txt"

But if you want to remove the file only from the Git repository and not remove it from the filesystem, use:
git rm --cached file1.txt
git rm -r --cached folder
git commit -m "remove file1.txt & folder"

https://stackoverflow.com/questions/2047465/how-can-i-delete-a-file-from-a-git-repository

1. git reflog
2. git checkout -b  

https://confluence.atlassian.com/bbkb/how-to-restore-a-deleted-branch-765757540.html

rm -rf .git
git init

1. cd project.git
2. git symbolic-ref HEAD refs/heads/mybranch

HEAD file (master):
ref: refs/heads/master

HEAD file (branch):
ref: refs/heads/branch

https://feeding.cloud.geek.nz/posts/setting-default-git-branch-in-bare/

Simple merge from branch to master

git checkout master
git pull origin master
git merge test
git push origin master

git remote -v
git remote add
git remote remove
git remote rename

1. 1. git init --bare (--bare flag it is generally only used on servers)

   2. create file: project.git/hooks/post-receive/

   3. Write in file: git --work-tree=/var/www/project --git-dir=/var/repo/project.git checkout -f

   4. chmod +x post-receive

   5. create project folder: /var/www/project

git checkout . - Removes Unstaged Tracked files ONLY [Type 2]

git clean -f - Removes Unstaged UnTracked files ONLY [Type 3]

git reset --hard - Removes Staged Tracked and UnStaged Tracked files ONLY[Type 1, Type 2]

git stash -u - Removes all changes [Type 1, Type 2, Type 3]

Conclusion:

It's clear that we can use either

(1) combination of `git clean -f` and `git reset --hard`
OR

(2) `git stash -u`