Documentation / git-clone.txton commit fast-import: duplicate into history rather than passing ownership (1ebec8d)
   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] [--no-tags]
  17          [--recurse-submodules[=<pathspec>]] [--[no-]shallow-submodules]
  18          [--[no-]remote-submodules] [--jobs <n>] [--] <repository>
  19          [<directory>]
  20
  21DESCRIPTION
  22-----------
  23
  24Clones a repository into a newly created directory, creates
  25remote-tracking branches for each branch in the cloned repository
  26(visible using `git branch --remotes`), and creates and checks out an
  27initial branch that is forked from the cloned repository's
  28currently active branch.
  29
  30After the clone, a plain `git fetch` without arguments will update
  31all the remote-tracking branches, and a `git pull` without
  32arguments will in addition merge the remote master branch into the
  33current master branch, if any (this is untrue when "--single-branch"
  34is given; see below).
  35
  36This default configuration is achieved by creating references to
  37the remote branch heads under `refs/remotes/origin` and
  38by initializing `remote.origin.url` and `remote.origin.fetch`
  39configuration variables.
  40
  41
  42OPTIONS
  43-------
  44-l::
  45--local::
  46        When the repository to clone from is on a local machine,
  47        this flag bypasses the normal "Git aware" transport
  48        mechanism and clones the repository by making a copy of
  49        HEAD and everything under objects and refs directories.
  50        The files under `.git/objects/` directory are hardlinked
  51        to save space when possible.
  52+
  53If the repository is specified as a local path (e.g., `/path/to/repo`),
  54this is the default, and --local is essentially a no-op.  If the
  55repository is specified as a URL, then this flag is ignored (and we
  56never use the local optimizations).  Specifying `--no-local` will
  57override the default when `/path/to/repo` is given, using the regular
  58Git transport instead.
  59
  60--no-hardlinks::
  61        Force the cloning process from a repository on a local
  62        filesystem to copy the files under the `.git/objects`
  63        directory instead of using hardlinks. This may be desirable
  64        if you are trying to make a back-up of your repository.
  65
  66-s::
  67--shared::
  68        When the repository to clone is on the local machine,
  69        instead of using hard links, automatically setup
  70        `.git/objects/info/alternates` to share the objects
  71        with the source repository.  The resulting repository
  72        starts out without any object of its own.
  73+
  74*NOTE*: this is a possibly dangerous operation; do *not* use
  75it unless you understand what it does. If you clone your
  76repository using this option and then delete branches (or use any
  77other Git command that makes any existing commit unreferenced) in the
  78source repository, some objects may become unreferenced (or dangling).
  79These objects may be removed by normal Git operations (such as `git commit`)
  80which automatically call `git gc --auto`. (See linkgit:git-gc[1].)
  81If these objects are removed and were referenced by the cloned repository,
  82then the cloned repository will become corrupt.
  83+
  84Note that running `git repack` without the `--local` option in a repository
  85cloned with `--shared` will copy objects from the source repository into a pack
  86in the cloned repository, removing the disk space savings of `clone --shared`.
  87It is safe, however, to run `git gc`, which uses the `--local` option by
  88default.
  89+
  90If you want to break the dependency of a repository cloned with `--shared` on
  91its source repository, you can simply run `git repack -a` to copy all
  92objects from the source repository into a pack in the cloned repository.
  93
  94--reference[-if-able] <repository>::
  95        If the reference repository is on the local machine,
  96        automatically setup `.git/objects/info/alternates` to
  97        obtain objects from the reference repository.  Using
  98        an already existing repository as an alternate will
  99        require fewer objects to be copied from the repository
 100        being cloned, reducing network and local storage costs.
 101        When using the `--reference-if-able`, a non existing
 102        directory is skipped with a warning instead of aborting
 103        the clone.
 104+
 105*NOTE*: see the NOTE for the `--shared` option, and also the
 106`--dissociate` option.
 107
 108--dissociate::
 109        Borrow the objects from reference repositories specified
 110        with the `--reference` options only to reduce network
 111        transfer, and stop borrowing from them after a clone is made
 112        by making necessary local copies of borrowed objects.  This
 113        option can also be used when cloning locally from a
 114        repository that already borrows objects from another
 115        repository--the new repository will borrow objects from the
 116        same repository, and this option can be used to stop the
 117        borrowing.
 118
 119-q::
 120--quiet::
 121        Operate quietly.  Progress is not reported to the standard
 122        error stream.
 123
 124-v::
 125--verbose::
 126        Run verbosely. Does not affect the reporting of progress status
 127        to the standard error stream.
 128
 129--progress::
 130        Progress status is reported on the standard error stream
 131        by default when it is attached to a terminal, unless `--quiet`
 132        is specified. This flag forces progress status even if the
 133        standard error stream is not directed to a terminal.
 134
 135--server-option=<option>::
 136        Transmit the given string to the server when communicating using
 137        protocol version 2.  The given string must not contain a NUL or LF
 138        character.  The server's handling of server options, including
 139        unknown ones, is server-specific.
 140        When multiple `--server-option=<option>` are given, they are all
 141        sent to the other side in the order listed on the command line.
 142
 143-n::
 144--no-checkout::
 145        No checkout of HEAD is performed after the clone is complete.
 146
 147--bare::
 148        Make a 'bare' Git repository.  That is, instead of
 149        creating `<directory>` and placing the administrative
 150        files in `<directory>/.git`, make the `<directory>`
 151        itself the `$GIT_DIR`. This obviously implies the `--no-checkout`
 152        because there is nowhere to check out the working tree.
 153        Also the branch heads at the remote are copied directly
 154        to corresponding local branch heads, without mapping
 155        them to `refs/remotes/origin/`.  When this option is
 156        used, neither remote-tracking branches nor the related
 157        configuration variables are created.
 158
 159--mirror::
 160        Set up a mirror of the source repository.  This implies `--bare`.
 161        Compared to `--bare`, `--mirror` not only maps local branches of the
 162        source to local branches of the target, it maps all refs (including
 163        remote-tracking branches, notes etc.) and sets up a refspec configuration such
 164        that all these refs are overwritten by a `git remote update` in the
 165        target repository.
 166
 167-o <name>::
 168--origin <name>::
 169        Instead of using the remote name `origin` to keep track
 170        of the upstream repository, use `<name>`.
 171
 172-b <name>::
 173--branch <name>::
 174        Instead of pointing the newly created HEAD to the branch pointed
 175        to by the cloned repository's HEAD, point to `<name>` branch
 176        instead. In a non-bare repository, this is the branch that will
 177        be checked out.
 178        `--branch` can also take tags and detaches the HEAD at that commit
 179        in the resulting repository.
 180
 181-u <upload-pack>::
 182--upload-pack <upload-pack>::
 183        When given, and the repository to clone from is accessed
 184        via ssh, this specifies a non-default path for the command
 185        run on the other end.
 186
 187--template=<template_directory>::
 188        Specify the directory from which templates will be used;
 189        (See the "TEMPLATE DIRECTORY" section of linkgit:git-init[1].)
 190
 191-c <key>=<value>::
 192--config <key>=<value>::
 193        Set a configuration variable in the newly-created repository;
 194        this takes effect immediately after the repository is
 195        initialized, but before the remote history is fetched or any
 196        files checked out.  The key is in the same format as expected by
 197        linkgit:git-config[1] (e.g., `core.eol=true`). If multiple
 198        values are given for the same key, each value will be written to
 199        the config file. This makes it safe, for example, to add
 200        additional fetch refspecs to the origin remote.
 201+
 202Due to limitations of the current implementation, some configuration
 203variables do not take effect until after the initial fetch and checkout.
 204Configuration variables known to not take effect are:
 205`remote.<name>.mirror` and `remote.<name>.tagOpt`.  Use the
 206corresponding `--mirror` and `--no-tags` options instead.
 207
 208--depth <depth>::
 209        Create a 'shallow' clone with a history truncated to the
 210        specified number of commits. Implies `--single-branch` unless
 211        `--no-single-branch` is given to fetch the histories near the
 212        tips of all branches. If you want to clone submodules shallowly,
 213        also pass `--shallow-submodules`.
 214
 215--shallow-since=<date>::
 216        Create a shallow clone with a history after the specified time.
 217
 218--shallow-exclude=<revision>::
 219        Create a shallow clone with a history, excluding commits
 220        reachable from a specified remote branch or tag.  This option
 221        can be specified multiple times.
 222
 223--[no-]single-branch::
 224        Clone only the history leading to the tip of a single branch,
 225        either specified by the `--branch` option or the primary
 226        branch remote's `HEAD` points at.
 227        Further fetches into the resulting repository will only update the
 228        remote-tracking branch for the branch this option was used for the
 229        initial cloning.  If the HEAD at the remote did not point at any
 230        branch when `--single-branch` clone was made, no remote-tracking
 231        branch is created.
 232
 233--no-tags::
 234        Don't clone any tags, and set
 235        `remote.<remote>.tagOpt=--no-tags` in the config, ensuring
 236        that future `git pull` and `git fetch` operations won't follow
 237        any tags. Subsequent explicit tag fetches will still work,
 238        (see linkgit:git-fetch[1]).
 239+
 240Can be used in conjunction with `--single-branch` to clone and
 241maintain a branch with no references other than a single cloned
 242branch. This is useful e.g. to maintain minimal clones of the default
 243branch of some repository for search indexing.
 244
 245--recurse-submodules[=<pathspec]::
 246        After the clone is created, initialize and clone submodules
 247        within based on the provided pathspec.  If no pathspec is
 248        provided, all submodules are initialized and cloned.
 249        This option can be given multiple times for pathspecs consisting
 250        of multiple entries.  The resulting clone has `submodule.active` set to
 251        the provided pathspec, or "." (meaning all submodules) if no
 252        pathspec is provided.
 253+
 254Submodules are initialized and cloned using their default settings. This is
 255equivalent to running
 256`git submodule update --init --recursive <pathspec>` immediately after
 257the clone is finished. This option is ignored if the cloned repository does
 258not have a worktree/checkout (i.e. if any of `--no-checkout`/`-n`, `--bare`,
 259or `--mirror` is given)
 260
 261--[no-]shallow-submodules::
 262        All submodules which are cloned will be shallow with a depth of 1.
 263
 264--[no-]remote-submodules::
 265        All submodules which are cloned will use the status of the submodule’s
 266        remote-tracking branch to update the submodule, rather than the
 267        superproject’s recorded SHA-1. Equivalent to passing `--remote` to
 268        `git submodule update`.
 269
 270--separate-git-dir=<git dir>::
 271        Instead of placing the cloned repository where it is supposed
 272        to be, place the cloned repository at the specified directory,
 273        then make a filesystem-agnostic Git symbolic link to there.
 274        The result is Git repository can be separated from working
 275        tree.
 276
 277-j <n>::
 278--jobs <n>::
 279        The number of submodules fetched at the same time.
 280        Defaults to the `submodule.fetchJobs` option.
 281
 282<repository>::
 283        The (possibly remote) repository to clone from.  See the
 284        <<URLS,GIT URLS>> section below for more information on specifying
 285        repositories.
 286
 287<directory>::
 288        The name of a new directory to clone into.  The "humanish"
 289        part of the source repository is used if no directory is
 290        explicitly given (`repo` for `/path/to/repo.git` and `foo`
 291        for `host.xz:foo/.git`).  Cloning into an existing directory
 292        is only allowed if the directory is empty.
 293
 294:git-clone: 1
 295include::urls.txt[]
 296
 297EXAMPLES
 298--------
 299
 300* Clone from upstream:
 301+
 302------------
 303$ git clone git://git.kernel.org/pub/scm/.../linux.git my-linux
 304$ cd my-linux
 305$ make
 306------------
 307
 308
 309* Make a local clone that borrows from the current directory, without checking things out:
 310+
 311------------
 312$ git clone -l -s -n . ../copy
 313$ cd ../copy
 314$ git show-branch
 315------------
 316
 317
 318* Clone from upstream while borrowing from an existing local directory:
 319+
 320------------
 321$ git clone --reference /git/linux.git \
 322        git://git.kernel.org/pub/scm/.../linux.git \
 323        my-linux
 324$ cd my-linux
 325------------
 326
 327
 328* Create a bare repository to publish your changes to the public:
 329+
 330------------
 331$ git clone --bare -l /home/proj/.git /pub/scm/proj.git
 332------------
 333
 334
 335GIT
 336---
 337Part of the linkgit:git[1] suite