Documentation / git-clone.txton commit Merge branch 'sb/submodule-misc-cleanups' (de76eb6)
   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] [--[no-]shallow-submodules]
  18          [--jobs <n>] [--] <repository> [<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.  This
 109        option can also be used when cloning locally from a
 110        repository that already borrows objects from another
 111        repository--the new repository will borrow objects from the
 112        same repository, and this option can be used to stop the
 113        borrowing.
 114
 115--quiet::
 116-q::
 117        Operate quietly.  Progress is not reported to the standard
 118        error stream.
 119
 120--verbose::
 121-v::
 122        Run verbosely. Does not affect the reporting of progress status
 123        to the standard error stream.
 124
 125--progress::
 126        Progress status is reported on the standard error stream
 127        by default when it is attached to a terminal, unless -q
 128        is specified. This flag forces progress status even if the
 129        standard error stream is not directed to a terminal.
 130
 131--no-checkout::
 132-n::
 133        No checkout of HEAD is performed after the clone is complete.
 134
 135--bare::
 136        Make a 'bare' Git repository.  That is, instead of
 137        creating `<directory>` and placing the administrative
 138        files in `<directory>/.git`, make the `<directory>`
 139        itself the `$GIT_DIR`. This obviously implies the `-n`
 140        because there is nowhere to check out the working tree.
 141        Also the branch heads at the remote are copied directly
 142        to corresponding local branch heads, without mapping
 143        them to `refs/remotes/origin/`.  When this option is
 144        used, neither remote-tracking branches nor the related
 145        configuration variables are created.
 146
 147--mirror::
 148        Set up a mirror of the source repository.  This implies `--bare`.
 149        Compared to `--bare`, `--mirror` not only maps local branches of the
 150        source to local branches of the target, it maps all refs (including
 151        remote-tracking branches, notes etc.) and sets up a refspec configuration such
 152        that all these refs are overwritten by a `git remote update` in the
 153        target repository.
 154
 155--origin <name>::
 156-o <name>::
 157        Instead of using the remote name `origin` to keep track
 158        of the upstream repository, use `<name>`.
 159
 160--branch <name>::
 161-b <name>::
 162        Instead of pointing the newly created HEAD to the branch pointed
 163        to by the cloned repository's HEAD, point to `<name>` branch
 164        instead. In a non-bare repository, this is the branch that will
 165        be checked out.
 166        `--branch` can also take tags and detaches the HEAD at that commit
 167        in the resulting repository.
 168
 169--upload-pack <upload-pack>::
 170-u <upload-pack>::
 171        When given, and the repository to clone from is accessed
 172        via ssh, this specifies a non-default path for the command
 173        run on the other end.
 174
 175--template=<template_directory>::
 176        Specify the directory from which templates will be used;
 177        (See the "TEMPLATE DIRECTORY" section of linkgit:git-init[1].)
 178
 179--config <key>=<value>::
 180-c <key>=<value>::
 181        Set a configuration variable in the newly-created repository;
 182        this takes effect immediately after the repository is
 183        initialized, but before the remote history is fetched or any
 184        files checked out.  The key is in the same format as expected by
 185        linkgit:git-config[1] (e.g., `core.eol=true`). If multiple
 186        values are given for the same key, each value will be written to
 187        the config file. This makes it safe, for example, to add
 188        additional fetch refspecs to the origin remote.
 189
 190--depth <depth>::
 191        Create a 'shallow' clone with a history truncated to the
 192        specified number of commits. Implies `--single-branch` unless
 193        `--no-single-branch` is given to fetch the histories near the
 194        tips of all branches. This implies `--shallow-submodules`. If
 195        you want to have a shallow superproject clone, but full submodules,
 196        also pass `--no-shallow-submodules`.
 197
 198--[no-]single-branch::
 199        Clone only the history leading to the tip of a single branch,
 200        either specified by the `--branch` option or the primary
 201        branch remote's `HEAD` points at.
 202        Further fetches into the resulting repository will only update the
 203        remote-tracking branch for the branch this option was used for the
 204        initial cloning.  If the HEAD at the remote did not point at any
 205        branch when `--single-branch` clone was made, no remote-tracking
 206        branch is created.
 207
 208--recursive::
 209--recurse-submodules::
 210        After the clone is created, initialize all submodules within,
 211        using their default settings. This is equivalent to running
 212        `git submodule update --init --recursive` immediately after
 213        the clone is finished. This option is ignored if the cloned
 214        repository does not have a worktree/checkout (i.e. if any of
 215        `--no-checkout`/`-n`, `--bare`, or `--mirror` is given)
 216
 217--[no-]shallow-submodules::
 218        All submodules which are cloned will be shallow with a depth of 1.
 219
 220--separate-git-dir=<git dir>::
 221        Instead of placing the cloned repository where it is supposed
 222        to be, place the cloned repository at the specified directory,
 223        then make a filesystem-agnostic Git symbolic link to there.
 224        The result is Git repository can be separated from working
 225        tree.
 226
 227-j <n>::
 228--jobs <n>::
 229        The number of submodules fetched at the same time.
 230        Defaults to the `submodule.fetchJobs` option.
 231
 232<repository>::
 233        The (possibly remote) repository to clone from.  See the
 234        <<URLS,URLS>> section below for more information on specifying
 235        repositories.
 236
 237<directory>::
 238        The name of a new directory to clone into.  The "humanish"
 239        part of the source repository is used if no directory is
 240        explicitly given (`repo` for `/path/to/repo.git` and `foo`
 241        for `host.xz:foo/.git`).  Cloning into an existing directory
 242        is only allowed if the directory is empty.
 243
 244:git-clone: 1
 245include::urls.txt[]
 246
 247Examples
 248--------
 249
 250* Clone from upstream:
 251+
 252------------
 253$ git clone git://git.kernel.org/pub/scm/.../linux.git my-linux
 254$ cd my-linux
 255$ make
 256------------
 257
 258
 259* Make a local clone that borrows from the current directory, without checking things out:
 260+
 261------------
 262$ git clone -l -s -n . ../copy
 263$ cd ../copy
 264$ git show-branch
 265------------
 266
 267
 268* Clone from upstream while borrowing from an existing local directory:
 269+
 270------------
 271$ git clone --reference /git/linux.git \
 272        git://git.kernel.org/pub/scm/.../linux.git \
 273        my-linux
 274$ cd my-linux
 275------------
 276
 277
 278* Create a bare repository to publish your changes to the public:
 279+
 280------------
 281$ git clone --bare -l /home/proj/.git /pub/scm/proj.git
 282------------
 283
 284
 285GIT
 286---
 287Part of the linkgit:git[1] suite