Undo git push and git commit

git_tips.txt

# undo last push
git push -f origin ab123c4:master

# undo last commit
git reset --hard HEAD~2

# undo last push (7cdab32)
git push origin +7cdab32^:master

# show last commit changed files
git show --pretty="format:" --name-only bd61ad98

# print diff of certain file with HEAD
git diff HEAD^^ src/main/java/com/example/service/AccountService.java

# create a branch
git branch new_branch

# create a branch from a previous commit 
git branch new_branch bd61ad98

# list all branches
git branch

# create remote branch
git push origin new_branch

# delete local branch
git branch -D design-v2

# delete remote branch
git push origin --delete design-v2

# commit details for specific artifact
git log -p /app/src/main/java/net/acargil/Demo.java

# show each commit which changed this file
git log --oneline /app/src/main/java/net/acargil/Demo.java

# show last 3 git commits with these informations:
# "which files were touched?" "who changed?" "when changed?"
git log --pretty=format:"%H%n%ai%n%an (%ae)%n%B" --no-merges --name-status -n 3

# list changed files names since that commit
git diff 3eb9d24 --name-status

# remove unstaged files
git clean -fd

# revert all changes
git checkout -- .

# clean workspace
git reset --hard origin/trunk

# git add tag / remove tag
git tag mytag
git push origin --tags 

git tag -d mytag
git push origin :refs/tags/mytag

# return to any commit
git checkout a6s626y
git checkout -b temp
git push -f origin HEAD:master

# reflog is for reference logs and holds current activities
git reflog
# unde git reset head
git reset 'HEAD@{1}'