github - commits not found

Question

When using github, this is what I usually do:

• git pull to make sure if everything is up-to-date
• git add . to add all my changes
• git commit -m "some message" to commit my changes
• git push to push my changes

After every change on my local files, I do the same above operations and go check on the website. The changes are there and everyone can see them. They exist on both local and remote repos. But once in a while, all my commits disappear and they're somehow discarded. I noticed that this happen whenever a colleague working on the same repo makes a change.

If this helps:

• git log shows that my commits are logged

• git checkout master says that I am already on master.

• My Github profile says that I committed X number of commits to the repository, but when I click on them, it says "commits not found".

When on the master branch, are git push and git push origin master different?

I would like to know If I am doing something wrong here, so I can avoid doing it in future commits.

Answer 1

The problem is when he makes a commit, all my changes are gone. They're not even in the history. It's like he is creating a whole new repository every time he makes a change.

That would only happen if he forced a push

git push --force

On GitHub, you could at least protect your master branch .

When on the master branch, are git push and git push origin master different?

You can check the output of git branch -avv : it should show that master has an upstream (remote tracking) branch origin/master . In that case, git push is enough.
See " Why do I need to explicitly push a new branch? "