For more information on bare repository creation, read about git init. Bare repos don’t have a working directory so a push will not alter any in progress working directory content. Since pushing messes with the remote branch structure, It is safest and most common to push to repositories that have been created with the -bare flag. This origin repository is often hosted off-site with a trusted 3rd party like Bitbucket. Pushing to bare repositoriesĪ frequently used, modern Git practice is to have a remotely hosted -bare repository act as a central origin repository.
#Git push command download#
Once changesets have been moved via a download or upload a git merge may be performed at the destination to integrate the changes. git push can be considered and 'upload' command whereas, git fetch and git pull can be thought of as 'download' commands. The syncing commands operate on remote branches which are configured using the git remote command. Git push is one component of many used in the overall Git "syncing" process. Notice how git push is essentially the same as running git merge main from inside the remote repository. The above diagram shows what happens when your local main has progressed past the central repository’s main and you publish changes by running git push origin main. After a local repository has been modified a push is executed to share the modifications with remote team members. Git push is most commonly used to publish an upload local changes to a central repository. The -tags flag sends all of your local tags to the remote repository.
#Git push command full#
If many cases, though, you can just work directly with the full reference name.Tags are not automatically pushed when you push a branch or use the -all option. Once you know the prefix, you can use $ to strip off the known prefix and get the full but unqualified branch or tag name. it's something else entirely, such as refs/notes/*. It's better to verify the first components of the ref-i.e., do something like: case $ref in If you are pushing a branch named bugfix/1234, it will think you are pushing a branch named bugfix! The cut technique is just wrong, but a quick fix for the latter is to use -f3-, which at least produces bugfix/1234. If you are pushing tag v2.3, this hook will think you are pushing a branch named v2.3. :-)ĢThere are a lot of bad sample hooks (not all of them pre-push hooks) out there that use: branch=$(echo $ref | cut -d/ -f3) 2ġLike 38.61% of statistics, this one was made up on the spot. To write a reliable hook, you must inspect the full name, rather than simply stripping off the first two components. If you are pushing a branch, that full name starts with refs/heads/, but you can push a tag, in which case the full name starts with refs/tags/. 1Īs the documentation notes, the hook gets the full name of each reference. This will give you the illusion that your hook is 100% reliable, when it's actually only 92.37% reliable.
On the other hand, most users mostly just push the current branch. The current branch in the repository is not important: reading HEAD will give you the wrong answer unless the user happens to be pushing the current branch. You must read all input lines, one line at a time, to discover what is to be pushed. For instance, I can run: git push origin feature-A feature-B A git push command can push more than one branch. The first paragraph means that in a shell script, $1 and $2 are the name of the remote-e.g., origin-and its URL, or the URL repeated twice if the user ran: git push. Information about what is to be pushed is provided on the hook’s standard input with lines of the form: SP SP SP LFįor instance, if the command git push origin master:foreign were run the hook would receive a line like the following: refs/heads/master 67890 refs/heads/foreign 12345Īlthough the full, 40-character SHA-1s would be supplied. The hook is called with two parameters which provide the name and location of the destination remote, if a named remote is not being used both values will be the same. This hook is called by git push and can be used to prevent a push from taking place. The pre-push hook description begins with: Your hook script (assuming sh/bash) should include a loop of the form: while read localname localhash remotename remotehash doĪll of the Git hooks are described in the githooks page.
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