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       git-p4 - Import from and submit to Perforce repositories


       git p4 clone [<sync options>] [<clone options>] <p4 depot path>...
       git p4 sync [<sync options>] [<p4 depot path>...]
       git p4 rebase
       git p4 submit [<submit options>] [<master branch name>]


       This command provides a way to interact with p4 repositories using Git.

       Create a new Git repository from an existing p4 repository using git p4 clone, giving it
       one or more p4 depot paths. Incorporate new commits from p4 changes with git p4 sync. The
       sync command is also used to include new branches from other p4 depot paths. Submit Git
       changes back to p4 using git p4 submit. The command git p4 rebase does a sync plus rebases
       the current branch onto the updated p4 remote branch.


       ·   Clone a repository:

               $ git p4 clone //depot/path/project

       ·   Do some work in the newly created Git repository:

               $ cd project
               $ vi foo.h
               $ git commit -a -m "edited foo.h"

       ·   Update the Git repository with recent changes from p4, rebasing your work on top:

               $ git p4 rebase

       ·   Submit your commits back to p4:

               $ git p4 submit


       Generally, git p4 clone is used to create a new Git directory from an existing p4

           $ git p4 clone //depot/path/project


        1. Creates an empty Git repository in a subdirectory called project.

        2. Imports the full contents of the head revision from the given p4 depot path into a
           single commit in the Git branch refs/remotes/p4/master.

        3. Creates a local branch, master from this remote and checks it out.

       To reproduce the entire p4 history in Git, use the @all modifier on the depot path:

           $ git p4 clone //depot/path/project@all

       As development continues in the p4 repository, those changes can be included in the Git
       repository using:

           $ git p4 sync

       This command finds new changes in p4 and imports them as Git commits.

       P4 repositories can be added to an existing Git repository using git p4 sync too:

           $ mkdir repo-git
           $ cd repo-git
           $ git init
           $ git p4 sync //path/in/your/perforce/depot

       This imports the specified depot into refs/remotes/p4/master in an existing Git
       repository. The --branch option can be used to specify a different branch to be used for
       the p4 content.

       If a Git repository includes branches refs/remotes/origin/p4, these will be fetched and
       consulted first during a git p4 sync. Since importing directly from p4 is considerably
       slower than pulling changes from a Git remote, this can be useful in a multi-developer

       If there are multiple branches, doing git p4 sync will automatically use the "BRANCH
       DETECTION" algorithm to try to partition new changes into the right branch. This can be
       overridden with the --branch option to specify just a single branch to update.

       A common working pattern is to fetch the latest changes from the p4 depot and merge them
       with local uncommitted changes. Often, the p4 repository is the ultimate location for all
       code, thus a rebase workflow makes sense. This command does git p4 sync followed by git
       rebase to move local commits on top of updated p4 changes.

           $ git p4 rebase

       Submitting changes from a Git repository back to the p4 repository requires a separate p4
       client workspace. This should be specified using the P4CLIENT environment variable or the
       Git configuration variable git-p4.client. The p4 client must exist, but the client root
       will be created and populated if it does not already exist.

       To submit all changes that are in the current Git branch but not in the p4/master branch,

           $ git p4 submit

       To specify a branch other than the current one, use:

           $ git p4 submit topicbranch

       The upstream reference is generally refs/remotes/p4/master, but can be overridden using
       the --origin= command-line option.

       The p4 changes will be created as the user invoking git p4 submit. The --preserve-user
       option will cause ownership to be modified according to the author of the Git commit. This
       option requires admin privileges in p4, which can be granted using p4 protect.


   General options
       All commands except clone accept these options.

       --git-dir <dir>
           Set the GIT_DIR environment variable. See git(1).

       -v, --verbose
           Provide more progress information.

   Sync options
       These options can be used in the initial clone as well as in subsequent sync operations.

       --branch <ref>
           Import changes into <ref> instead of refs/remotes/p4/master. If <ref> starts with
           refs/, it is used as is. Otherwise, if it does not start with p4/, that prefix is

           By default a <ref> not starting with refs/ is treated as the name of a remote-tracking
           branch (under refs/remotes/). This behavior can be modified using the --import-local

           The default <ref> is "master".

           This example imports a new remote "p4/proj2" into an existing Git repository:

                   $ git init
                   $ git p4 sync --branch=refs/remotes/p4/proj2 //depot/proj2

           Use the branch detection algorithm to find new paths in p4. It is documented below in
           "BRANCH DETECTION".

       --changesfile <file>
           Import exactly the p4 change numbers listed in file, one per line. Normally, git p4
           inspects the current p4 repository state and detects the changes it should import.

           Do not print any progress information.

           Query p4 for labels associated with the depot paths, and add them as tags in Git.
           Limited usefulness as only imports labels associated with new changelists. Deprecated.

           Import labels from p4 into Git.

           By default, p4 branches are stored in refs/remotes/p4/, where they will be treated as
           remote-tracking branches by git-branch(1) and other commands. This option instead puts
           p4 branches in refs/heads/p4/. Note that future sync operations must specify
           --import-local as well so that they can find the p4 branches in refs/heads.

       --max-changes <n>
           Limit the number of imported changes to n. Useful to limit the amount of history when
           using the @all p4 revision specifier.

           The mapping of file names from the p4 depot path to Git, by default, involves removing
           the entire depot path. With this option, the full p4 depot path is retained in Git.
           For example, path //depot/main/foo/bar.c, when imported from //depot/main/, becomes
           foo/bar.c. With --keep-path, the Git path is instead depot/main/foo/bar.c.

           Use a client spec to find the list of interesting files in p4. See the "CLIENT SPEC"
           section below.

   Clone options
       These options can be used in an initial clone, along with the sync options described

       --destination <directory>
           Where to create the Git repository. If not provided, the last component in the p4
           depot path is used to create a new directory.

           Perform a bare clone. See git-clone(1).

       -/ <path>
           Exclude selected depot paths when cloning.

   Submit options
       These options can be used to modify git p4 submit behavior.

       --origin <commit>
           Upstream location from which commits are identified to submit to p4. By default, this
           is the most recent p4 commit reachable from HEAD.

           Detect renames. See git-diff(1). Renames will be represented in p4 using explicit move
           operations. There is no corresponding option to detect copies, but there are variables
           for both moves and copies.

           Re-author p4 changes before submitting to p4. This option requires p4 admin

           Export tags from Git as p4 labels. Tags found in Git are applied to the perforce
           working directory.

       -n, --dry-run
           Show just what commits would be submitted to p4; do not change state in Git or p4.

           Apply a commit to the p4 workspace, opening, adding and deleting files in p4 as for a
           normal submit operation. Do not issue the final "p4 submit", but instead print a
           message about how to submit manually or revert. This option always stops after the
           first (oldest) commit. Git tags are not exported to p4.

           Conflicts can occur when applying a commit to p4. When this happens, the default
           behavior ("ask") is to prompt whether to skip this commit and continue, or quit. This
           option can be used to bypass the prompt, causing conflicting commits to be
           automatically skipped, or to quit trying to apply commits, without prompting.

       --branch <branch>
           After submitting, sync this named branch instead of the default p4/master. See the
           "Sync options" section above for more information.

   Rebase options
       These options can be used to modify git p4 rebase behavior.

           Import p4 labels.


       The p4 depot path argument to git p4 sync and git p4 clone can be one or more
       space-separated p4 depot paths, with an optional p4 revision specifier on the end:

           Import one commit with all files in the #head change under that tree.

           Import one commit for each change in the history of that depot path.

           Import only changes 1 through 6.

       "//depot/proj1@all //depot/proj2@all"
           Import all changes from both named depot paths into a single repository. Only files
           below these directories are included. There is not a subdirectory in Git for each
           "proj1" and "proj2". You must use the --destination option when specifying more than
           one depot path. The revision specifier must be specified identically on each depot
           path. If there are files in the depot paths with the same name, the path with the most
           recently updated version of the file is the one that appears in Git.

       See p4 help revisions for the full syntax of p4 revision specifiers.


       The p4 client specification is maintained with the p4 client command and contains among
       other fields, a View that specifies how the depot is mapped into the client repository.
       The clone and sync commands can consult the client spec when given the --use-client-spec
       option or when the useClientSpec variable is true. After git p4 clone, the useClientSpec
       variable is automatically set in the repository configuration file. This allows future git
       p4 submit commands to work properly; the submit command looks only at the variable and
       does not have a command-line option.

       The full syntax for a p4 view is documented in p4 help views. git p4 knows only a subset
       of the view syntax. It understands multi-line mappings, overlays with +, exclusions with -
       and double-quotes around whitespace. Of the possible wildcards, git p4 only handles ...,
       and only when it is at the end of the path. git p4 will complain if it encounters an
       unhandled wildcard.

       Bugs in the implementation of overlap mappings exist. If multiple depot paths map through
       overlays to the same location in the repository, git p4 can choose the wrong one. This is
       hard to solve without dedicating a client spec just for git p4.

       The name of the client can be given to git p4 in multiple ways. The variable git-p4.client
       takes precedence if it exists. Otherwise, normal p4 mechanisms of determining the client
       are used: environment variable P4CLIENT, a file referenced by P4CONFIG, or the local host


       P4 does not have the same concept of a branch as Git. Instead, p4 organizes its content as
       a directory tree, where by convention different logical branches are in different
       locations in the tree. The p4 branch command is used to maintain mappings between
       different areas in the tree, and indicate related content. git p4 can use these mappings
       to determine branch relationships.

       If you have a repository where all the branches of interest exist as subdirectories of a
       single depot path, you can use --detect-branches when cloning or syncing to have git p4
       automatically find subdirectories in p4, and to generate these as branches in Git.

       For example, if the P4 repository structure is:


       And "p4 branch -o branch1" shows a View line that looks like:

           //depot/main/... //depot/branch1/...

       Then this git p4 clone command:

           git p4 clone --detect-branches //depot@all

       produces a separate branch in refs/remotes/p4/ for //depot/main, called master, and one
       for //depot/branch1 called depot/branch1.

       However, it is not necessary to create branches in p4 to be able to use them like
       branches. Because it is difficult to infer branch relationships automatically, a Git
       configuration setting git-p4.branchList can be used to explicitly identify branch
       relationships. It is a list of "source:destination" pairs, like a simple p4 branch
       specification, where the "source" and "destination" are the path elements in the p4
       repository. The example above relied on the presence of the p4 branch. Without p4
       branches, the same result will occur with:

           git init depot
           cd depot
           git config git-p4.branchList main:branch1
           git p4 clone --detect-branches //depot@all .


       The fast-import mechanism used by git p4 creates one pack file for each invocation of git
       p4 sync. Normally, Git garbage compression (git-gc(1)) automatically compresses these to
       fewer pack files, but explicit invocation of git repack -adf may improve performance.


       The following config settings can be used to modify git p4 behavior. They all are in the
       git-p4 section.

   General variables
           User specified as an option to all p4 commands, with -u <user>. The environment
           variable P4USER can be used instead.

           Password specified as an option to all p4 commands, with -P <password>. The
           environment variable P4PASS can be used instead.

           Port specified as an option to all p4 commands, with -p <port>. The environment
           variable P4PORT can be used instead.
           Host specified as an option to all p4 commands, with -h <host>. The environment
           variable P4HOST can be used instead.

           Client specified as an option to all p4 commands, with -c <client>, including the
           client spec.

   Clone and sync variables
           Because importing commits from other Git repositories is much faster than importing
           them from p4, a mechanism exists to find p4 changes first in Git remotes. If branches
           exist under refs/remote/origin/p4, those will be fetched and used when syncing from
           p4. This variable can be set to false to disable this behavior.

           One phase in branch detection involves looking at p4 branches to find new ones to
           import. By default, all branches are inspected. This option limits the search to just
           those owned by the single user named in the variable.

           List of branches to be imported when branch detection is enabled. Each entry should be
           a pair of branch names separated by a colon (:). This example declares that both
           branchA and branchB were created from main:

               git config       git-p4.branchList main:branchA
               git config --add git-p4.branchList main:branchB

           List of p4 labels to ignore. This is built automatically as unimportable labels are

           Import p4 labels into git, as per --import-labels.

           Only p4 labels matching this regular expression will be imported. The default value is

           Specify that the p4 client spec should be used to identify p4 depot paths of interest.
           This is equivalent to specifying the option --use-client-spec. See the "CLIENT SPEC"
           section above. This variable is a boolean, not the name of a p4 client.

   Submit variables
           Detect renames. See git-diff(1). This can be true, false, or a score as expected by
           git diff -M.

           Detect copies. See git-diff(1). This can be true, false, or a score as expected by git
           diff -C.

           Detect copies harder. See git-diff(1). A boolean.

           On submit, re-author changes to reflect the Git author, regardless of who invokes git
           p4 submit.

           When preserveUser is true, git p4 normally dies if it cannot find an author in the p4
           user map. This setting submits the change regardless.

           The submit process invokes the editor before each p4 change is submitted. If this
           setting is true, though, the editing step is skipped.

           After editing the p4 change message, git p4 makes sure that the description really was
           changed by looking at the file modification time. This option disables that test.

           By default, any branch can be used as the source for a git p4 submit operation. This
           configuration variable, if set, permits only the named branches to be used as submit
           sources. Branch names must be the short names (no "refs/heads/"), and should be
           separated by commas (","), with no spaces.

           If the user running git p4 submit does not exist in the p4 user map, git p4 exits.
           This option can be used to force submission regardless.

           If enabled, git p4 submit will attempt to cleanup RCS keywords ($Header$, etc). These
           would otherwise cause merge conflicts and prevent the submit going ahead. This option
           should be considered experimental at present.

           Export Git tags to p4 labels, as per --export-labels.

           Only p4 labels matching this regular expression will be exported. The default value is

           Specify submit behavior when a conflict with p4 is found, as per --conflict. The
           default behavior is ask.


       ·   Changesets from p4 are imported using Git fast-import.

       ·   Cloning or syncing does not require a p4 client; file contents are collected using p4

       ·   Submitting requires a p4 client, which is not in the same location as the Git
           repository. Patches are applied, one at a time, to this p4 client and submitted from

       ·   Each commit imported by git p4 has a line at the end of the log message indicating the
           p4 depot location and change number. This line is used by later git p4 sync operations
           to know which p4 changes are new.