Documentation / git-clone.txton commit t9801: check git-p4's branch detection with client spec enabled (591707a)
   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>] [-b <name>] [-u <upload-pack>] [--reference <repository>]
  15          [--dissociate] [--separate-git-dir <git dir>]
  16          [--depth <depth>] [--[no-]single-branch]
  17          [--recursive | --recurse-submodules] [--] <repository>
  18          [<directory>]
  19
  20DESCRIPTION
  21-----------
  22
  23Clones a repository into a newly created directory, creates
  24remote-tracking branches for each branch in the cloned repository
  25(visible using `git branch -r`), and creates and checks out an
  26initial branch that is forked from the cloned repository's
  27currently active branch.
  28
  29After the clone, a plain `git fetch` without arguments will update
  30all the remote-tracking branches, and a `git pull` without
  31arguments will in addition merge the remote master branch into the
  32current master branch, if any (this is untrue when "--single-branch"
  33is given; see below).
  34
  35This default configuration is achieved by creating references to
  36the remote branch heads under `refs/remotes/origin` and
  37by initializing `remote.origin.url` and `remote.origin.fetch`
  38configuration variables.
  39
  40
  41OPTIONS
  42-------
  43--local::
  44-l::
  45        When the repository to clone from is on a local machine,
  46        this flag bypasses the normal "Git aware" transport
  47        mechanism and clones the repository by making a copy of
  48        HEAD and everything under objects and refs directories.
  49        The files under `.git/objects/` directory are hardlinked
  50        to save space when possible.
  51+
  52If the repository is specified as a local path (e.g., `/path/to/repo`),
  53this is the default, and --local is essentially a no-op.  If the
  54repository is specified as a URL, then this flag is ignored (and we
  55never use the local optimizations).  Specifying `--no-local` will
  56override the default when `/path/to/repo` is given, using the regular
  57Git transport instead.
  58
  59--no-hardlinks::
  60        Force the cloning process from a repository on a local
  61        filesystem to copy the files under the `.git/objects`
  62        directory instead of using hardlinks. This may be desirable
  63        if you are trying to make a back-up of your repository.
  64
  65--shared::
  66-s::
  67        When the repository to clone is on the local machine,
  68        instead of using hard links, automatically setup
  69        `.git/objects/info/alternates` to share the objects
  70        with the source repository.  The resulting repository
  71        starts out without any object of its own.
  72+
  73*NOTE*: this is a possibly dangerous operation; do *not* use
  74it unless you understand what it does. If you clone your
  75repository using this option and then delete branches (or use any
  76other Git command that makes any existing commit unreferenced) in the
  77source repository, some objects may become unreferenced (or dangling).
  78These objects may be removed by normal Git operations (such as `git commit`)
  79which automatically call `git gc --auto`. (See linkgit:git-gc[1].)
  80If these objects are removed and were referenced by the cloned repository,
  81then the cloned repository will become corrupt.
  82+
  83Note that running `git repack` without the `-l` option in a repository
  84cloned with `-s` will copy objects from the source repository into a pack
  85in the cloned repository, removing the disk space savings of `clone -s`.
  86It is safe, however, to run `git gc`, which uses the `-l` option by
  87default.
  88+
  89If you want to break the dependency of a repository cloned with `-s` on
  90its source repository, you can simply run `git repack -a` to copy all
  91objects from the source repository into a pack in the cloned repository.
  92
  93--reference <repository>::
  94        If the reference repository is on the local machine,
  95        automatically setup `.git/objects/info/alternates` to
  96        obtain objects from the reference repository.  Using
  97        an already existing repository as an alternate will
  98        require fewer objects to be copied from the repository
  99        being cloned, reducing network and local storage costs.
 100+
 101*NOTE*: see the NOTE for the `--shared` option, and also the
 102`--dissociate` option.
 103
 104--dissociate::
 105        Borrow the objects from reference repositories specified
 106        with the `--reference` options only to reduce network
 107        transfer and stop borrowing from them after a clone is made
 108        by making necessary local copies of borrowed objects.
 109
 110--quiet::
 111-q::
 112        Operate quietly.  Progress is not reported to the standard
 113        error stream. This flag is also passed to the `rsync'
 114        command when given.
 115
 116--verbose::
 117-v::
 118        Run verbosely. Does not affect the reporting of progress status
 119        to the standard error stream.
 120
 121--progress::
 122        Progress status is reported on the standard error stream
 123        by default when it is attached to a terminal, unless -q
 124        is specified. This flag forces progress status even if the
 125        standard error stream is not directed to a terminal.
 126
 127--no-checkout::
 128-n::
 129        No checkout of HEAD is performed after the clone is complete.
 130
 131--bare::
 132        Make a 'bare' Git repository.  That is, instead of
 133        creating `<directory>` and placing the administrative
 134        files in `<directory>/.git`, make the `<directory>`
 135        itself the `$GIT_DIR`. This obviously implies the `-n`
 136        because there is nowhere to check out the working tree.
 137        Also the branch heads at the remote are copied directly
 138        to corresponding local branch heads, without mapping
 139        them to `refs/remotes/origin/`.  When this option is
 140        used, neither remote-tracking branches nor the related
 141        configuration variables are created.
 142
 143--mirror::
 144        Set up a mirror of the source repository.  This implies `--bare`.
 145        Compared to `--bare`, `--mirror` not only maps local branches of the
 146        source to local branches of the target, it maps all refs (including
 147        remote-tracking branches, notes etc.) and sets up a refspec configuration such
 148        that all these refs are overwritten by a `git remote update` in the
 149        target repository.
 150
 151--origin <name>::
 152-o <name>::
 153        Instead of using the remote name `origin` to keep track
 154        of the upstream repository, use `<name>`.
 155
 156--branch <name>::
 157-b <name>::
 158        Instead of pointing the newly created HEAD to the branch pointed
 159        to by the cloned repository's HEAD, point to `<name>` branch
 160        instead. In a non-bare repository, this is the branch that will
 161        be checked out.
 162        `--branch` can also take tags and detaches the HEAD at that commit
 163        in the resulting repository.
 164
 165--upload-pack <upload-pack>::
 166-u <upload-pack>::
 167        When given, and the repository to clone from is accessed
 168        via ssh, this specifies a non-default path for the command
 169        run on the other end.
 170
 171--template=<template_directory>::
 172        Specify the directory from which templates will be used;
 173        (See the "TEMPLATE DIRECTORY" section of linkgit:git-init[1].)
 174
 175--config <key>=<value>::
 176-c <key>=<value>::
 177        Set a configuration variable in the newly-created repository;
 178        this takes effect immediately after the repository is
 179        initialized, but before the remote history is fetched or any
 180        files checked out.  The key is in the same format as expected by
 181        linkgit:git-config[1] (e.g., `core.eol=true`). If multiple
 182        values are given for the same key, each value will be written to
 183        the config file. This makes it safe, for example, to add
 184        additional fetch refspecs to the origin remote.
 185
 186--depth <depth>::
 187        Create a 'shallow' clone with a history truncated to the
 188        specified number of revisions.
 189
 190--[no-]single-branch::
 191        Clone only the history leading to the tip of a single branch,
 192        either specified by the `--branch` option or the primary
 193        branch remote's `HEAD` points at. When creating a shallow
 194        clone with the `--depth` option, this is the default, unless
 195        `--no-single-branch` is given to fetch the histories near the
 196        tips of all branches.
 197        Further fetches into the resulting repository will only update the
 198        remote-tracking branch for the branch this option was used for the
 199        initial cloning.  If the HEAD at the remote did not point at any
 200        branch when `--single-branch` clone was made, no remote-tracking
 201        branch is created.
 202
 203--recursive::
 204--recurse-submodules::
 205        After the clone is created, initialize all submodules within,
 206        using their default settings. This is equivalent to running
 207        `git submodule update --init --recursive` immediately after
 208        the clone is finished. This option is ignored if the cloned
 209        repository does not have a worktree/checkout (i.e. if any of
 210        `--no-checkout`/`-n`, `--bare`, or `--mirror` is given)
 211
 212--separate-git-dir=<git dir>::
 213        Instead of placing the cloned repository where it is supposed
 214        to be, place the cloned repository at the specified directory,
 215        then make a filesystem-agnostic Git symbolic link to there.
 216        The result is Git repository can be separated from working
 217        tree.
 218
 219
 220<repository>::
 221        The (possibly remote) repository to clone from.  See the
 222        <<URLS,URLS>> section below for more information on specifying
 223        repositories.
 224
 225<directory>::
 226        The name of a new directory to clone into.  The "humanish"
 227        part of the source repository is used if no directory is
 228        explicitly given (`repo` for `/path/to/repo.git` and `foo`
 229        for `host.xz:foo/.git`).  Cloning into an existing directory
 230        is only allowed if the directory is empty.
 231
 232:git-clone: 1
 233include::urls.txt[]
 234
 235Examples
 236--------
 237
 238* Clone from upstream:
 239+
 240------------
 241$ git clone git://git.kernel.org/pub/scm/.../linux.git my-linux
 242$ cd my-linux
 243$ make
 244------------
 245
 246
 247* Make a local clone that borrows from the current directory, without checking things out:
 248+
 249------------
 250$ git clone -l -s -n . ../copy
 251$ cd ../copy
 252$ git show-branch
 253------------
 254
 255
 256* Clone from upstream while borrowing from an existing local directory:
 257+
 258------------
 259$ git clone --reference /git/linux.git \
 260        git://git.kernel.org/pub/scm/.../linux.git \
 261        my-linux
 262$ cd my-linux
 263------------
 264
 265
 266* Create a bare repository to publish your changes to the public:
 267+
 268------------
 269$ git clone --bare -l /home/proj/.git /pub/scm/proj.git
 270------------
 271
 272
 273GIT
 274---
 275Part of the linkgit:git[1] suite