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Pushing to an updated remote branch

From: Git Essential Training

Video: Pushing to an updated remote branch

In this movie we are going to talk about what happens when you try to push to a remote server that has been updated. Here is the situation that I'm talking about. Imagine that we have our remote server and our local repository and both of them have three commits in it. We do a fetch, so we know that we are completely in sync, we just have these three git commits. So once I know that I am in sync, I start my work for the day. And over the course of the next hour I put together a commit. I then commit it to my local repository. At the same time though, my coworkers and collaborators have also been making commits and they've been pushing their commits up to the remote server.

Pushing to an updated remote branch

In this movie we are going to talk about what happens when you try to push to a remote server that has been updated. Here is the situation that I'm talking about. Imagine that we have our remote server and our local repository and both of them have three commits in it. We do a fetch, so we know that we are completely in sync, we just have these three git commits. So once I know that I am in sync, I start my work for the day. And over the course of the next hour I put together a commit. I then commit it to my local repository. At the same time though, my coworkers and collaborators have also been making commits and they've been pushing their commits up to the remote server.

So now when I try to push my commits to the remote server, the remote server says, well, I don't know what to do with your commits, there has been some new stuff that's come in in the meantime. Git never tries to do a merge during a push. Instead what Git says is, some new stuff has come in. I'm not sure what to do about all this. You need to fetch the changes that are on the remote server, then sort it out on your end and come back and try again. So we do a fetch. We've got the new information about what's on the remote server, we now see why there's a problem, oh, there were some other commits there.

But that doesn't solve our problem. We've still got to merge our changes in with those. This is not just because there's a conflict, it's not because I changed Line 37 of index.html and someone else changed Line 37 of index.html, it's just simply because there were new commits. So what we need to do in this case is git merge origin/master, that will then merge my changes in with origin/master and create a new merge commit, and then I can push again and the remote server will accept it.

If there were merge conflicts, I would need to fix those just like we do with the normal merge conflicts. But in most cases you don't even get conflicts, you just simply have to do the merge in order to send it to the remote server. So just keep that in mind, if you can't push the remote server, you'll just need to fetch, then merge, then push again. That way we can make sure that everyone's changes are taken into account.

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This video is part of

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Git Essential Training

89 video lessons · 34595 viewers

Kevin Skoglund
Author

 
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  1. 2m 46s
    1. Introduction
      1m 7s
    2. How to use the exercise files
      1m 39s
  2. 20m 24s
    1. Understanding version control
      4m 48s
    2. The history of Git
      7m 58s
    3. About distributed version control
      5m 4s
    4. Who should use Git?
      2m 34s
  3. 26m 12s
    1. Installing Git on a Mac
      3m 44s
    2. Installing Git on Windows
      5m 37s
    3. Installing Git on Linux
      1m 30s
    4. Configuring Git
      7m 29s
    5. Exploring Git auto-completion
      5m 35s
    6. Using Git help
      2m 17s
  4. 15m 49s
    1. Initializing a repository
      1m 58s
    2. Understanding where Git files are stored
      2m 34s
    3. Performing your first commit
      2m 4s
    4. Writing commit messages
      5m 22s
    5. Viewing the commit log
      3m 51s
  5. 17m 44s
    1. Exploring the three-trees architecture
      3m 57s
    2. The Git workflow
      3m 15s
    3. Using hash values (SHA-1)
      4m 7s
    4. Working with the HEAD pointer
      6m 25s
  6. 25m 52s
    1. Adding files
      5m 59s
    2. Editing files
      3m 56s
    3. Viewing changes with diff
      3m 35s
    4. Viewing only staged changes
      2m 28s
    5. Deleting files
      5m 29s
    6. Moving and renaming files
      4m 25s
  7. 19m 18s
    1. Introducing the Explore California web site
      2m 2s
    2. Initializing Git
      3m 48s
    3. Editing the support phone number
      6m 20s
    4. Editing the backpack file name and links
      7m 8s
  8. 38m 45s
    1. Undoing working directory changes
      3m 49s
    2. Unstaging files
      2m 37s
    3. Amending commits
      4m 50s
    4. Retrieving old versions
      4m 7s
    5. Reverting a commit
      3m 12s
    6. Using reset to undo commits
      3m 44s
    7. Demonstrating a soft reset
      4m 8s
    8. Demonstrating a mixed reset
      4m 7s
    9. Demonstrating a hard reset
      5m 8s
    10. Removing untracked files
      3m 3s
  9. 27m 22s
    1. Using .gitignore files
      8m 23s
    2. Understanding what to ignore
      4m 47s
    3. Ignoring files globally
      4m 49s
    4. Ignoring tracked files
      5m 26s
    5. Tracking empty directories
      3m 57s
  10. 26m 51s
    1. Referencing commits
      4m 52s
    2. Exploring tree listings
      3m 46s
    3. Getting more from the commit log
      7m 38s
    4. Viewing commits
      4m 4s
    5. Comparing commits
      6m 31s
  11. 39m 35s
    1. Branching overview
      4m 56s
    2. Viewing and creating branches
      2m 57s
    3. Switching branches
      2m 58s
    4. Creating and switching branches
      4m 53s
    5. Switching branches with uncommitted changes
      3m 26s
    6. Comparing branches
      4m 28s
    7. Renaming branches
      2m 28s
    8. Deleting branches
      4m 18s
    9. Configuring the command prompt to show the branch
      9m 11s
  12. 28m 32s
    1. Merging code
      3m 11s
    2. Using fast-forward merge vs. true merge
      6m 49s
    3. Merging conflicts
      7m 26s
    4. Resolving merge conflicts
      7m 5s
    5. Exploring strategies to reduce merge conflicts
      4m 1s
  13. 14m 34s
    1. Saving changes in the stash
      4m 5s
    2. Viewing stashed changes
      2m 39s
    3. Retrieving stashed changes
      4m 24s
    4. Deleting stashed changes
      3m 26s
  14. 1h 5m
    1. Using local and remote repositories
      6m 38s
    2. Setting up a GitHub account
      5m 39s
    3. Adding a remote repository
      4m 0s
    4. Creating a remote branch
      4m 3s
    5. Cloning a remote repository
      4m 26s
    6. Tracking remote branches
      4m 5s
    7. Pushing changes to a remote repository
      5m 8s
    8. Fetching changes from a remote repository
      5m 47s
    9. Merging in fetched changes
      4m 50s
    10. Checking out remote branches
      3m 22s
    11. Pushing to an updated remote branch
      2m 6s
    12. Deleting a remote branch
      3m 8s
    13. Enabling collaboration
      3m 40s
    14. A collaboration workflow
      8m 43s
  15. 16m 23s
    1. Setting up aliases for common commands
      5m 14s
    2. Using SSH keys for remote login
      2m 56s
    3. Exploring integrated development environments
      1m 4s
    4. Exploring graphical user interfaces
      4m 32s
    5. Understanding Git hosting
      2m 37s
  16. 55s
    1. Goodbye
      55s

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