Documentation / git-clone.txton commit Documentation: bisect: change a few instances of "git-cmd" to "git cmd" (5bcce84)
   1git-clone(1)
   2============
   3
   4NAME
   5----
   6git-clone - Clone a repository into a new directory
   7
   8
   9SYNOPSIS
  10--------
  11[verse]
  12'git clone' [--template=<template_directory>]
  13          [-l] [-s] [--no-hardlinks] [-q] [-n] [--bare] [--mirror]
  14          [-o <name>] [-u <upload-pack>] [--reference <repository>]
  15          [--depth <depth>] [--] <repository> [<directory>]
  16
  17DESCRIPTION
  18-----------
  19
  20Clones a repository into a newly created directory, creates
  21remote-tracking branches for each branch in the cloned repository
  22(visible using `git branch -r`), and creates and checks out an initial
  23branch equal to the cloned repository's currently active branch.
  24
  25After the clone, a plain `git fetch` without arguments will update
  26all the remote-tracking branches, and a `git pull` without
  27arguments will in addition merge the remote master branch into the
  28current master branch, if any.
  29
  30This default configuration is achieved by creating references to
  31the remote branch heads under `$GIT_DIR/refs/remotes/origin` and
  32by initializing `remote.origin.url` and `remote.origin.fetch`
  33configuration variables.
  34
  35
  36OPTIONS
  37-------
  38--local::
  39-l::
  40        When the repository to clone from is on a local machine,
  41        this flag bypasses normal "git aware" transport
  42        mechanism and clones the repository by making a copy of
  43        HEAD and everything under objects and refs directories.
  44        The files under `.git/objects/` directory are hardlinked
  45        to save space when possible.  This is now the default when
  46        the source repository is specified with `/path/to/repo`
  47        syntax, so it essentially is a no-op option.  To force
  48        copying instead of hardlinking (which may be desirable
  49        if you are trying to make a back-up of your repository),
  50        but still avoid the usual "git aware" transport
  51        mechanism, `--no-hardlinks` can be used.
  52
  53--no-hardlinks::
  54        Optimize the cloning process from a repository on a
  55        local filesystem by copying files under `.git/objects`
  56        directory.
  57
  58--shared::
  59-s::
  60        When the repository to clone is on the local machine,
  61        instead of using hard links, automatically setup
  62        .git/objects/info/alternates to share the objects
  63        with the source repository.  The resulting repository
  64        starts out without any object of its own.
  65+
  66*NOTE*: this is a possibly dangerous operation; do *not* use
  67it unless you understand what it does. If you clone your
  68repository using this option and then delete branches (or use any
  69other git command that makes any existing commit unreferenced) in the
  70source repository, some objects may become unreferenced (or dangling).
  71These objects may be removed by normal git operations (such as 'git-commit')
  72which automatically call `git gc --auto`. (See linkgit:git-gc[1].)
  73If these objects are removed and were referenced by the cloned repository,
  74then the cloned repository will become corrupt.
  75
  76
  77
  78--reference <repository>::
  79        If the reference repository is on the local machine
  80        automatically setup .git/objects/info/alternates to
  81        obtain objects from the reference repository.  Using
  82        an already existing repository as an alternate will
  83        require fewer objects to be copied from the repository
  84        being cloned, reducing network and local storage costs.
  85+
  86*NOTE*: see NOTE to --shared option.
  87
  88--quiet::
  89-q::
  90        Operate quietly.  This flag is also passed to the `rsync'
  91        command when given.
  92
  93--no-checkout::
  94-n::
  95        No checkout of HEAD is performed after the clone is complete.
  96
  97--bare::
  98        Make a 'bare' GIT repository.  That is, instead of
  99        creating `<directory>` and placing the administrative
 100        files in `<directory>/.git`, make the `<directory>`
 101        itself the `$GIT_DIR`. This obviously implies the `-n`
 102        because there is nowhere to check out the working tree.
 103        Also the branch heads at the remote are copied directly
 104        to corresponding local branch heads, without mapping
 105        them to `refs/remotes/origin/`.  When this option is
 106        used, neither remote-tracking branches nor the related
 107        configuration variables are created.
 108
 109--mirror::
 110        Set up a mirror of the remote repository.  This implies --bare.
 111
 112--origin <name>::
 113-o <name>::
 114        Instead of using the remote name 'origin' to keep track
 115        of the upstream repository, use <name> instead.
 116
 117--upload-pack <upload-pack>::
 118-u <upload-pack>::
 119        When given, and the repository to clone from is accessed
 120        via ssh, this specifies a non-default path for the command
 121        run on the other end.
 122
 123--template=<template_directory>::
 124        Specify the directory from which templates will be used;
 125        if unset the templates are taken from the installation
 126        defined default, typically `/usr/share/git-core/templates`.
 127
 128--depth <depth>::
 129        Create a 'shallow' clone with a history truncated to the
 130        specified number of revisions.  A shallow repository has a
 131        number of limitations (you cannot clone or fetch from
 132        it, nor push from nor into it), but is adequate if you
 133        are only interested in the recent history of a large project
 134        with a long history, and would want to send in fixes
 135        as patches.
 136
 137<repository>::
 138        The (possibly remote) repository to clone from.  See the
 139        <<URLS,URLS>> section below for more information on specifying
 140        repositories.
 141
 142<directory>::
 143        The name of a new directory to clone into.  The "humanish"
 144        part of the source repository is used if no directory is
 145        explicitly given ("repo" for "/path/to/repo.git" and "foo"
 146        for "host.xz:foo/.git").  Cloning into an existing directory
 147        is not allowed.
 148
 149:git-clone: 1
 150include::urls.txt[]
 151
 152Examples
 153--------
 154
 155Clone from upstream::
 156+
 157------------
 158$ git clone git://git.kernel.org/pub/scm/.../linux-2.6 my2.6
 159$ cd my2.6
 160$ make
 161------------
 162
 163
 164Make a local clone that borrows from the current directory, without checking things out::
 165+
 166------------
 167$ git clone -l -s -n . ../copy
 168$ cd ../copy
 169$ git show-branch
 170------------
 171
 172
 173Clone from upstream while borrowing from an existing local directory::
 174+
 175------------
 176$ git clone --reference my2.6 \
 177        git://git.kernel.org/pub/scm/.../linux-2.7 \
 178        my2.7
 179$ cd my2.7
 180------------
 181
 182
 183Create a bare repository to publish your changes to the public::
 184+
 185------------
 186$ git clone --bare -l /home/proj/.git /pub/scm/proj.git
 187------------
 188
 189
 190Create a repository on the kernel.org machine that borrows from Linus::
 191+
 192------------
 193$ git clone --bare -l -s /pub/scm/.../torvalds/linux-2.6.git \
 194    /pub/scm/.../me/subsys-2.6.git
 195------------
 196
 197
 198Author
 199------
 200Written by Linus Torvalds <torvalds@osdl.org>
 201
 202
 203Documentation
 204--------------
 205Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>.
 206
 207
 208GIT
 209---
 210Part of the linkgit:git[1] suite