<repository>::
- The "remote" repository to pull from. One of the
- following notations can be used to name the repository
- to pull from:
+ The "remote" repository that is the source of a fetch
+ or pull operation, or the destination of a push operation.
+ One of the following notations can be used
+ to name the remote repository:
++
+===============================================================
+- Rsync URL: rsync://remote.machine/path/to/repo.git/
+- HTTP(s) URL: http://remote.machine/path/to/repo.git/
+- git URL: git://remote.machine/path/to/repo.git/
+ or remote.machine:/path/to/repo.git/
+- Local directory: /path/to/repo.git/
+===============================================================
++
+In addition to the above, as a short-hand, the name of a
+file in `$GIT_DIR/remotes` directory can be given; the
+named file should be in the following format:
++
+ URL: one of the above URL format
+ Push: <refspec>...
+ Pull: <refspec>...
++
+When such a short-hand is specified in place of
+<repository> without <refspec> parameters on the command
+line, <refspec>... specified on `Push:` lines or `Pull:`
+lines are used for `git-push` and `git-fetch`/`git-pull`,
+respectively. Multiple `Push:` and and `Pull:` lines may
+be specified for additional branch mappings.
++
+The name of a file in `$GIT_DIR/branches` directory can be
+specified as an older notation short-hand; the named
+file should contain a single line, a URL in one of the
+above formats, optionally followed by a hash `#` and the
+name of remote head (URL fragment notation).
+`$GIT_DIR/branches/<remote>` file that stores a <url>
+without the fragment is equivalent to have this in the
+corresponding file in the `$GIT_DIR/remotes/` directory.
++
+ URL: <url>
+ Pull: refs/heads/master:<remote>
++
+while having `<url>#<head>` is equivalent to
++
+ URL: <url>
+ Pull: refs/heads/<head>:<remote>
- Rsync URL
- rsync://remote.machine/path/to/repo.git/
-
- HTTP(s) URL
- http://remote.machine/path/to/repo.git/
-
- GIT URL
- git://remote.machine/path/to/repo.git/
- remote.machine:/path/to/repo.git/
-
- Local directory
- /path/to/repo.git/
-
- In addition to that, as a short-hand, the name of a file
- in $GIT_DIR/branches directory can be specified; the
- named file should contain a single line, a URL in one of
- the above formats, optionally followed by a hash '#' and
- the name of remote head.
-
-<head>::
- The remote head name to fetch from. That is, make the
- objects reachable from the commit recorded in
- $GIT_DIR/refs/heads/<head> in the remote repository
- available locally.
-
-tag <tag>::
- The remote head tag to fetch from. That is, make the
- objects reachable from the commit recorded in
- $GIT_DIR/refs/tags/<tag> in the remote repository
- available locally.
+<refspec>::
+ The canonical format of a <refspec> parameter is
+ `+?<src>:<dst>`; that is, an optional plus `+`, followed
+ by the source ref, followed by a colon `:`, followed by
+ the destination ref.
++
+When used in `git-push`, the <src> side can be an
+arbitrary "SHA1 expression" that can be used as an
+argument to `git-cat-file -t`. E.g. `master~4` (push
+four parents before the current master head).
++
+For `git-push`, the local ref that matches <src> is used
+to fast forward the remote ref that matches <dst>. If
+the optional plus `+` is used, the remote ref is updated
+even if it does not result in a fast forward update.
++
+For `git-fetch` and `git-pull`, the remote ref that matches <src>
+is fetched, and if <dst> is not empty string, the local
+ref that matches it is fast forwarded using <src>.
+Again, if the optional plus `+` is used, the local ref
+is updated even if it does not result in a fast forward
+update.
++
+[NOTE]
+If the remote branch from which you want to pull is
+modified in non-linear ways such as being rewound and
+rebased frequently, then a pull will attempt a merge with
+an older version of itself, likely conflict, and fail.
+It is under these conditions that you would want to use
+the `+` sign to indicate non-fast-forward updates will
+be needed. There is currently no easy way to determine
+or declare that a branch will be made available in a
+repository with this behavior; the pulling user simply
+must know this is the expected usage pattern for a branch.
++
+[NOTE]
+You never do your own development on branches that appear
+on the right hand side of a <refspec> colon on `Pull:` lines;
+they are to be updated by `git-fetch`. The corollary is that
+a local branch should be introduced and named on a <refspec>
+right-hand-side if you intend to do development derived from
+that branch.
+This leads to the common `Pull: master:origin` mapping of a
+remote `master` branch to a local `origin` branch, which
+is then merged to a local development branch, again typically
+named `master`.
++
+Some short-cut notations are also supported.
++
+* For backward compatibility, `tag` is almost ignored;
+ it just makes the following parameter <tag> to mean a
+ refspec `refs/tags/<tag>:refs/tags/<tag>`.
+* A parameter <ref> without a colon is equivalent to
+ <ref>: when pulling/fetching, and <ref>`:`<ref> when
+ pushing. That is, do not store it locally if
+ fetching, and update the same name if pushing.
projects / git.git / blobdiff