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Before syncing one's fork with an upstream repository, one must configure a remote that points to the upstream repository in Git.

Before syncing one's fork with an upstream repository, one must configure a remote that points to the upstream repository in Git.

Added 2 additional options.
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Gonçalo Peres
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There are twothree ways one can do that: from the web UI (Option 1), from the GitHub CLI (Option 2), or from the command line (Option 3).

 

Here I'll only consider how to sync from the web UI. If you are interested in knowing how to sync the forked repo from the command line, access the official documentation here.Option 1 - Web UI

enter image description here


Option 2 - GitHub CLI

To update the remote fork from its parent, use the gh repo sync subcommand and supply your fork name as argument.

$ gh repo sync owner/cli-fork

If the changes from the upstream repository cause conflict then the GitHub CLI can't sync. You can set the -force flag to overwrite the destination branch.


Option 3 - Command Line

Before syncing one's fork with an upstream repository, one must configure a remote that points to the upstream repository in Git.

1 Open Git Bash.

2 Change the current working directory to your local project.

3 Fetch the branches and their respective commits from the upstream repository. Commits to BRANCHNAME will be stored in the local branch upstream/BRANCHNAME.

$ git fetch upstream
> remote: Counting objects: 75, done.
> remote: Compressing objects: 100% (53/53), done.
> remote: Total 62 (delta 27), reused 44 (delta 9)
> Unpacking objects: 100% (62/62), done.
> From https://github.com/ORIGINAL_OWNER/ORIGINAL_REPOSITORY
>  * [new branch]      main     -> upstream/main

4 Check out your fork's local default branch - in this case, we use main.

$ git checkout main
> Switched to branch 'main'

5 Merge the changes from the upstream default branch - in this case, upstream/main - into your local default branch. This brings your fork's default branch into sync with the upstream repository, without losing your local changes.

$ git merge upstream/main
> Updating a422352..5fdff0f
> Fast-forward
>  README                    |    9 -------
>  README.md                 |    7 ++++++
>  2 files changed, 7 insertions(+), 9 deletions(-)
>  delete mode 100644 README
>  create mode 100644 README.md

If one's local branch didn't have any unique commits, Git will instead perform a "fast-forward":

$ git merge upstream/main
> Updating 34e91da..16c56ad
> Fast-forward
>  README.md                 |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)

Note: Syncing one's fork only updates one's local copy of the repo. To update one's fork on GitHub.com, one must push ones changes.


There are two ways one can do that: from the web UI, or from the command line.

Here I'll only consider how to sync from the web UI. If you are interested in knowing how to sync the forked repo from the command line, access the official documentation here.

enter image description here

There are three ways one can do that: from the web UI (Option 1), from the GitHub CLI (Option 2), or from the command line (Option 3).

 

Option 1 - Web UI

enter image description here


Option 2 - GitHub CLI

To update the remote fork from its parent, use the gh repo sync subcommand and supply your fork name as argument.

$ gh repo sync owner/cli-fork

If the changes from the upstream repository cause conflict then the GitHub CLI can't sync. You can set the -force flag to overwrite the destination branch.


Option 3 - Command Line

Before syncing one's fork with an upstream repository, one must configure a remote that points to the upstream repository in Git.

1 Open Git Bash.

2 Change the current working directory to your local project.

3 Fetch the branches and their respective commits from the upstream repository. Commits to BRANCHNAME will be stored in the local branch upstream/BRANCHNAME.

$ git fetch upstream
> remote: Counting objects: 75, done.
> remote: Compressing objects: 100% (53/53), done.
> remote: Total 62 (delta 27), reused 44 (delta 9)
> Unpacking objects: 100% (62/62), done.
> From https://github.com/ORIGINAL_OWNER/ORIGINAL_REPOSITORY
>  * [new branch]      main     -> upstream/main

4 Check out your fork's local default branch - in this case, we use main.

$ git checkout main
> Switched to branch 'main'

5 Merge the changes from the upstream default branch - in this case, upstream/main - into your local default branch. This brings your fork's default branch into sync with the upstream repository, without losing your local changes.

$ git merge upstream/main
> Updating a422352..5fdff0f
> Fast-forward
>  README                    |    9 -------
>  README.md                 |    7 ++++++
>  2 files changed, 7 insertions(+), 9 deletions(-)
>  delete mode 100644 README
>  create mode 100644 README.md

If one's local branch didn't have any unique commits, Git will instead perform a "fast-forward":

$ git merge upstream/main
> Updating 34e91da..16c56ad
> Fast-forward
>  README.md                 |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)

Note: Syncing one's fork only updates one's local copy of the repo. To update one's fork on GitHub.com, one must push ones changes.


Removed the old way, as it may lead to confusion.
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Gonçalo Peres
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There are two ways one can do that: from the web UI, or from the command line.

Here I'll only consider how to sync from the web UI. If you are interested in knowing how to sync the forked repo from the command line, access the official documentation here.

  1. On GitHub, navigate to the main page of the forked repository that you want to sync with the upstream repository.

  2. Select the Fetch upstream drop-down.

enter image description here

  1. Review the details about the commits from the upstream repository, then click Fetch and merge.

enter image description here

Source: GitHub Docs - Syncing a fork


[ARCHIVED] OLD WAY

There's a way to do it from GitHub's webapp.

Let's go through the following example.

To start with, open the repo that you want to update.

enter image description here

One can see the warning

This branch is 157 commits behind GoogleCloudPlatform:master.

On the right there are two buttons Pull request and Compare. Press Compare.

As there is probably nothing to compare, press switching the base

enter image description here

A list of all the changes will appear and one can create a pull request by pressing the button Create pull request

enter image description here

Give it a title, let's say "Update repo"

enter image description here

And create the pull request.

Once the request is created, scroll to the bottom and press Merge pull request.

enter image description here

Confirm the merge and that's it!

There are two ways one can do that: from the web UI, or from the command line.

Here I'll only consider how to sync from the web UI. If you are interested in knowing how to sync the forked repo from the command line, access the official documentation here.

  1. On GitHub, navigate to the main page of the forked repository that you want to sync with the upstream repository.

  2. Select the Fetch upstream drop-down.

enter image description here

  1. Review the details about the commits from the upstream repository, then click Fetch and merge.

enter image description here

Source: GitHub Docs - Syncing a fork


[ARCHIVED] OLD WAY

There's a way to do it from GitHub's webapp.

Let's go through the following example.

To start with, open the repo that you want to update.

enter image description here

One can see the warning

This branch is 157 commits behind GoogleCloudPlatform:master.

On the right there are two buttons Pull request and Compare. Press Compare.

As there is probably nothing to compare, press switching the base

enter image description here

A list of all the changes will appear and one can create a pull request by pressing the button Create pull request

enter image description here

Give it a title, let's say "Update repo"

enter image description here

And create the pull request.

Once the request is created, scroll to the bottom and press Merge pull request.

enter image description here

Confirm the merge and that's it!

There are two ways one can do that: from the web UI, or from the command line.

Here I'll only consider how to sync from the web UI. If you are interested in knowing how to sync the forked repo from the command line, access the official documentation here.

  1. On GitHub, navigate to the main page of the forked repository that you want to sync with the upstream repository.

  2. Select the Fetch upstream drop-down.

enter image description here

  1. Review the details about the commits from the upstream repository, then click Fetch and merge.

enter image description here

Source: GitHub Docs - Syncing a fork

Added the new way to solve this issue.
Source Link
Gonçalo Peres
  • 13k
  • 5
  • 67
  • 91
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Source Link
Gonçalo Peres
  • 13k
  • 5
  • 67
  • 91
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