Documentation / git-pull.txton commit push: fix segfault for odd config (db03b55)
   1git-pull(1)
   2===========
   3
   4NAME
   5----
   6git-pull - Fetch from and merge with another repository or a local branch
   7
   8
   9SYNOPSIS
  10--------
  11'git pull' <options> <repository> <refspec>...
  12
  13
  14DESCRIPTION
  15-----------
  16Runs 'git-fetch' with the given parameters, and calls 'git-merge'
  17to merge the retrieved head(s) into the current branch.
  18With `--rebase`, calls 'git-rebase' instead of 'git-merge'.
  19
  20Note that you can use `.` (current directory) as the
  21<repository> to pull from the local repository -- this is useful
  22when merging local branches into the current branch.
  23
  24Also note that options meant for 'git-pull' itself and underlying
  25'git-merge' must be given before the options meant for 'git-fetch'.
  26
  27OPTIONS
  28-------
  29include::merge-options.txt[]
  30
  31:git-pull: 1
  32
  33--rebase::
  34        Instead of a merge, perform a rebase after fetching.  If
  35        there is a remote ref for the upstream branch, and this branch
  36        was rebased since last fetched, the rebase uses that information
  37        to avoid rebasing non-local changes. To make this the default
  38        for branch `<name>`, set configuration `branch.<name>.rebase`
  39        to `true`.
  40+
  41[NOTE]
  42This is a potentially _dangerous_ mode of operation.
  43It rewrites history, which does not bode well when you
  44published that history already.  Do *not* use this option
  45unless you have read linkgit:git-rebase[1] carefully.
  46
  47--no-rebase::
  48        Override earlier --rebase.
  49
  50include::fetch-options.txt[]
  51
  52include::pull-fetch-param.txt[]
  53
  54include::urls-remotes.txt[]
  55
  56include::merge-strategies.txt[]
  57
  58DEFAULT BEHAVIOUR
  59-----------------
  60
  61Often people use `git pull` without giving any parameter.
  62Traditionally, this has been equivalent to saying `git pull
  63origin`.  However, when configuration `branch.<name>.remote` is
  64present while on branch `<name>`, that value is used instead of
  65`origin`.
  66
  67In order to determine what URL to use to fetch from, the value
  68of the configuration `remote.<origin>.url` is consulted
  69and if there is not any such variable, the value on `URL: ` line
  70in `$GIT_DIR/remotes/<origin>` file is used.
  71
  72In order to determine what remote branches to fetch (and
  73optionally store in the tracking branches) when the command is
  74run without any refspec parameters on the command line, values
  75of the configuration variable `remote.<origin>.fetch` are
  76consulted, and if there aren't any, `$GIT_DIR/remotes/<origin>`
  77file is consulted and its `Pull: ` lines are used.
  78In addition to the refspec formats described in the OPTIONS
  79section, you can have a globbing refspec that looks like this:
  80
  81------------
  82refs/heads/*:refs/remotes/origin/*
  83------------
  84
  85A globbing refspec must have a non-empty RHS (i.e. must store
  86what were fetched in tracking branches), and its LHS and RHS
  87must end with `/*`.  The above specifies that all remote
  88branches are tracked using tracking branches in
  89`refs/remotes/origin/` hierarchy under the same name.
  90
  91The rule to determine which remote branch to merge after
  92fetching is a bit involved, in order not to break backward
  93compatibility.
  94
  95If explicit refspecs were given on the command
  96line of `git pull`, they are all merged.
  97
  98When no refspec was given on the command line, then `git pull`
  99uses the refspec from the configuration or
 100`$GIT_DIR/remotes/<origin>`.  In such cases, the following
 101rules apply:
 102
 103. If `branch.<name>.merge` configuration for the current
 104  branch `<name>` exists, that is the name of the branch at the
 105  remote site that is merged.
 106
 107. If the refspec is a globbing one, nothing is merged.
 108
 109. Otherwise the remote branch of the first refspec is merged.
 110
 111
 112EXAMPLES
 113--------
 114
 115* Update the remote-tracking branches for the repository
 116  you cloned from, then merge one of them into your
 117  current branch:
 118+
 119------------------------------------------------
 120$ git pull, git pull origin
 121------------------------------------------------
 122+
 123Normally the branch merged in is the HEAD of the remote repository,
 124but the choice is determined by the branch.<name>.remote and
 125branch.<name>.merge options; see linkgit:git-config[1] for details.
 126
 127* Merge into the current branch the remote branch `next`:
 128+
 129------------------------------------------------
 130$ git pull origin next
 131------------------------------------------------
 132+
 133This leaves a copy of `next` temporarily in FETCH_HEAD, but
 134does not update any remote-tracking branches.
 135
 136* Bundle local branch `fixes` and `enhancements` on top of
 137  the current branch, making an Octopus merge:
 138+
 139------------------------------------------------
 140$ git pull . fixes enhancements
 141------------------------------------------------
 142+
 143This `git pull .` syntax is equivalent to `git merge`.
 144
 145* Merge local branch `obsolete` into the current branch, using `ours`
 146  merge strategy:
 147+
 148------------------------------------------------
 149$ git pull -s ours . obsolete
 150------------------------------------------------
 151
 152* Merge local branch `maint` into the current branch, but do not make
 153  a commit automatically:
 154+
 155------------------------------------------------
 156$ git pull --no-commit . maint
 157------------------------------------------------
 158+
 159This can be used when you want to include further changes to the
 160merge, or want to write your own merge commit message.
 161+
 162You should refrain from abusing this option to sneak substantial
 163changes into a merge commit.  Small fixups like bumping
 164release/version name would be acceptable.
 165
 166* Command line pull of multiple branches from one repository:
 167+
 168------------------------------------------------
 169$ git checkout master
 170$ git fetch origin +pu:pu maint:tmp
 171$ git pull . tmp
 172------------------------------------------------
 173+
 174This updates (or creates, as necessary) branches `pu` and `tmp` in
 175the local repository by fetching from the branches (respectively)
 176`pu` and `maint` from the remote repository.
 177+
 178The `pu` branch will be updated even if it is does not fast-forward;
 179the others will not be.
 180+
 181The final command then merges the newly fetched `tmp` into master.
 182
 183
 184If you tried a pull which resulted in a complex conflicts and
 185would want to start over, you can recover with 'git-reset'.
 186
 187
 188SEE ALSO
 189--------
 190linkgit:git-fetch[1], linkgit:git-merge[1], linkgit:git-config[1]
 191
 192
 193Author
 194------
 195Written by Linus Torvalds <torvalds@osdl.org>
 196and Junio C Hamano <gitster@pobox.com>
 197
 198Documentation
 199--------------
 200Documentation by Jon Loeliger,
 201David Greaves,
 202Junio C Hamano and the git-list <git@vger.kernel.org>.
 203
 204GIT
 205---
 206Part of the linkgit:git[1] suite