git-help

A list of issues encountered when working with git.

Can’t push to GitHub!

Error

Error message: Failed to push some refs to

Translation

type	text	translate
error	failed to push some refs to ‘https://github.com/…’	I could not push the changes to GitHub that you have committed.
hint	Updates were rejected because the remote contains work that you do not have locally.	There is work in the repo on GitHub (the remote) that you do not have in the location that you work with R (e.g. your laptop, RStudio Cloud).
hint	This is usually caused by another repository pushing to the same ref.	Someone else (including you on another computer) is working on this repo and has pushed some changes to it.
solution	You may first want to integate the remote changes (e.g. ’ git pull …’) before pushing again.	Pull, then push again.

Solution

Pull. If the work that you pull from GitHub does not overlap with something you have worked on locally (on your computer or RStudio Cloud), then this will be the solution. If you have had changes locally that overlap with the pulled changes on GitHub, you will receive another error message (to be written up).

In this case, the file ae-10a-lifecycle-solutions.qmd was added to the repo by an instructor.

Push. And keep on working with the next commit.

Can’t pull from GitHub!

Error

Error message: Your local changes to the following files would be overwritten by merge:

Translation

type	text	translation
error	Your local changes to the following files would be overwritten by merge: 01-introduction.qmd	You have worked on the 01-introduction.qmd file, but someone else has also done so and pushed their changes to GitHub. I can’t pull them because your code/text would be overwritten.
solution	Please commit your changes or stash them before your merge.	Before you get the changes from GitHub and add them to your file, go through the “Add -> Commit -> Push” workflow.

Solution

Add -> Commit -> Push. Add your changes to the file(s) to the staging area, commit your changes with a meaningful commit message, and push your changes back to GitHub.

Error

Error message: Failed to push some refs to

Translation

type	text	translation
error	failed to push some refs to ‘https://github.com/…’	I could not push the changes to GitHub that you have committed.
hint	Updates were rejected because the the tip of your current branch is behind it’s remote counterpart.	As you have already learned when you tried to pull, there changes on GitHub that you do not have in the location that you work with R (e.g. your laptop, RStudio Cloud).
solution	Integate the remote changes (e.g. ’ git pull …’) before pushing again.	I am telling you to pull again to get the work from GitHub, even though that didn’t work in first place.

Solution

Pull. Trust me on this one and pull.

Message

Message: CONFLICT (content): Merge conflict in

Translation

type	text	translation
message	CONFLICT (content): Merge conflict in 01-introduction.qmd	I have tried bring your changes to the 01-introduction.qmd file in harmony with the content that I pulled from GitHub.
hint	Automatic merge failed;	What I tried didn’t work, because you made changes to the text/code at the same places.
solution	fix conflicts and then commit the result	Open the 01-introduction.qmd again. I have added some references to the places where the conflicts exist. Fix those by deciding which content to keep, then go through the “Add -> Commit -> Push” workflow.

Solution

Step 1

First, take a peak at your the Git pane in the top right window of RStudio IDE.

The “Status” of the 01-introduction.qmd file has changes from M (modified) to U U (umerged). The tick box under “Staged” has also changed from an arrow to a blue square. Nothing to do here for now.

Step 2

Next, take a peak at the Diff (differences) of the 01-introduction.qmd . You will see content that was deleted or moved (in red) and content that was added in green. You may also already notice some unfamiliar looking text:

<<<<<<< HEAD

Everything that’s located here is the content that you have written locally.

=======

Everything that’s located here is the content that someone else has written, pushed to GitHub, and that you have just pulled.

>>>>>>> b6ad8157c69131b1a582affe962d7ab0bb28cfb3

Step 3

Open the `01-introduction.qmd` file in your code editor. Decide which text/code to keep and what to delete. Most importantly, remove the three unfamiliar looking lines.

Step 4

Add -> Commit -> Push. Open the Git pane in the top right window of RStudio IDE. You will see the status has changed back to M (modified). You can now follow the “Add -> Commit -> Push” workflow. A meaningful commit message would be “Fix merge conflict” as that is what you have just done by deciding which content to keep in the file.

• Add

• Commit with commit message “Fix merge conflict”

• Push