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2540e35bc1
Add a new "update" subcommand which mirrors `git update-ref <refname> <oldoid> <newoid>`. This follows the same reasoning as the preceding commit. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
140 lines
4.3 KiB
Plaintext
140 lines
4.3 KiB
Plaintext
git-refs(1)
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===========
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NAME
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----
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git-refs - Low-level access to refs
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SYNOPSIS
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--------
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[synopsis]
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git refs migrate --ref-format=<format> [--no-reflog] [--dry-run]
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git refs verify [--strict] [--verbose]
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git refs list [--count=<count>] [--shell|--perl|--python|--tcl]
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[(--sort=<key>)...] [--format=<format>]
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[--include-root-refs] [--points-at=<object>]
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[--merged[=<object>]] [--no-merged[=<object>]]
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[--contains[=<object>]] [--no-contains[=<object>]]
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[(--exclude=<pattern>)...] [--start-after=<marker>]
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[ --stdin | (<pattern>...)]
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git refs exists <ref>
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git refs optimize [--all] [--no-prune] [--auto] [--include <pattern>] [--exclude <pattern>]
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git refs delete [--message=<reason>] [--no-deref] <ref> [<old-value>]
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git refs update [--message=<reason>] [--no-deref] [--create-reflog] <ref> <new-value> [<old-value>]
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DESCRIPTION
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-----------
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This command provides low-level access to refs.
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COMMANDS
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--------
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`migrate`::
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Migrate ref store between different formats.
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`verify`::
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Verify reference database consistency.
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list::
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List references in the repository with support for filtering,
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formatting, and sorting. This subcommand is an alias for
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linkgit:git-for-each-ref[1] and offers identical functionality.
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exists::
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Check whether the given reference exists. Returns an exit code of 0 if
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it does, 2 if it is missing, and 1 in case looking up the reference
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failed with an error other than the reference being missing. This does
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not verify whether the reference resolves to an actual object.
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optimize::
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Optimizes references to improve repository performance and reduce disk
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usage. This subcommand is an alias for linkgit:git-pack-refs[1] and
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offers identical functionality.
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delete::
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Delete the given reference. This subcommand mirrors `git update-ref -d`
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(see linkgit:git-update-ref[1]). When `<old-value>` is given, the
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reference is only deleted after verifying that it currently contains
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`<old-value>`.
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update::
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Update the given reference to point at `<new-value>`. If `<old-value>`
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is given, the reference is only updated after verifying that it
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currently contains `<old-value>`. As a special case, an all-zeroes
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`<new-value>` deletes the branch, whereas an all-zeroes `<old-value>`
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ensures that the branch does not yet exist.
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OPTIONS
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-------
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The following options are specific to `git refs migrate`:
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`--ref-format=<format>`::
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The ref format to migrate the ref store to. Can be one of:
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+
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include::ref-storage-format.adoc[]
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`--dry-run`::
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Perform the migration, but do not modify the repository. The migrated
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refs will be written into a separate directory that can be inspected
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separately. The name of the directory will be reported on stdout. This
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can be used to double check that the migration works as expected before
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performing the actual migration.
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`--reflog`::
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`--no-reflog`::
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Choose between migrating the reflog data to the new backend,
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and discarding them. The default is "--reflog", to migrate.
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The following options are specific to `git refs verify`:
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`--strict`::
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Enable stricter error checking. This will cause warnings to be
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reported as errors. See linkgit:git-fsck[1].
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`--verbose`::
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When verifying the reference database consistency, be chatty.
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The following options are specific to 'git refs list':
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include::for-each-ref-options.adoc[]
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The following options are specific to 'git refs optimize':
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include::pack-refs-options.adoc[]
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The following options are specific to commands which write references:
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`--create-reflog`::
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Create a reflog for the reference even if one would not ordinarily be
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created.
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`--message=<reason>`::
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Use the given <reason> string for the reflog entry associated with the
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update. An empty message is rejected.
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`--no-deref`::
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Operate on <ref> itself rather than the reference it points to via a
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symbolic ref.
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KNOWN LIMITATIONS
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-----------------
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The ref format migration has several known limitations in its current form:
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* It is not possible to migrate repositories that have worktrees.
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* There is no way to block concurrent writes to the repository during an
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ongoing migration. Concurrent writes can lead to an inconsistent migrated
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state. Users are expected to block writes on a higher level. If your
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repository is registered for scheduled maintenance, it is recommended to
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unregister it first with git-maintenance(1).
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These limitations may eventually be lifted.
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GIT
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---
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Part of the linkgit:git[1] suite
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