NAME

       git-lfs-prune - Delete old LFS files from local storage

SYNOPSIS

       git lfs prune [options]

DESCRIPTION

       Deletes local copies of LFS files which are old, thus freeing up disk space. Prune
       operates by enumerating all the locally stored objects, and then deleting any which are
       not referenced by at least ONE of the following:

       •   the current checkout

       •   all existing stashes

       •   a 'recent branch'; see RECENT FILES

       •   a 'recent commit' on the current branch or recent branches; see RECENT FILES

       •   a commit which has not been pushed; see UNPUSHED LFS FILES

       •   any other worktree checkouts; see git-worktree(1)

       In general terms, prune will delete files you’re not currently using and which are not
       'recent', so long as they’ve been pushed i.e. the local copy is not the only one.

       The reflog is not considered, only commits. Therefore LFS objects that are only referenced
       by orphaned commits are always deleted.

       Note: you should not run git lfs prune if you have different repositories sharing the same
       custom storage directory; see git-lfs-config(5) for more details about lfs.storage option.

       In your Git configuration or in a .lfsconfig file, you may set lfs.fetchexclude to a
       comma-separated list of paths. If lfs.fetchexclude is defined, then any Git LFS files
       whose paths match one in that list will be pruned unless they are referenced by a stash or
       an unpushed commit. Paths are matched using wildcard matching as per gitignore(5).

OPTIONS

       --dry-run, -d
           Don’t actually delete anything, just report on what would have been done

       --force, -f
           Prune all objects except unpushed objects, including objects required for currently
           checked out refs. Implies --recent.

       --recent
           Prune even objects that would normally be preserved by the configuration options
           specified below in RECENT FILES.

       --verify-remote, -c
           Contact the remote and check that copies of the files we would delete definitely exist
           before deleting. See VERIFY REMOTE.

       --no-verify-remote
           Disables remote verification if lfs.pruneverifyremotealways was enabled in settings.
           See VERIFY REMOTE.

       --verbose, -v
           Report the full detail of what is/would be deleted.

RECENT FILES

       Prune won’t delete LFS files referenced by 'recent' commits, in case you want to use them
       again without having to download. The definition of 'recent' is derived from the one used
       by git-lfs-fetch(1) to download recent objects with the --recent option, with an offset of
       a number of days (default 3) to ensure that we always keep files you download for a few
       days.

       Here are the git-config(1) settings that control this behaviour:

       •   lfs.pruneoffsetdays The number of extra days added to the fetch recent settings when
           using them to decide when to prune. So for a reference to be considered old enough to
           prune, it has to be this many days older than the oldest reference that would be
           downloaded via git lfs fetch --recent. Only used if the relevant fetch recent 'days'
           setting is non-zero. Default 3 days.

       •   lfs.fetchrecentrefsdays lfs.fetchrecentremoterefs lfs.fetchrecentcommitsdays These
           have the same meaning as git-lfs-fetch(1) with the --recent option, they are used as a
           base for the offset above. Anything which falls outside of this offsetted window is
           considered old enough to prune. If a day value is zero, that condition is not used at
           all to retain objects and they will be pruned.

UNPUSHED LFS FILES

       When the only copy of an LFS file is local, and it is still reachable from any reference,
       that file can never be pruned, regardless of how old it is.

       To determine whether an LFS file has been pushed, we check the difference between local
       refs and remote refs; where the local ref is ahead, any LFS files referenced in those
       commits is unpushed and will not be deleted. This works because the LFS pre-push hook
       always ensures that LFS files are pushed before the remote branch is updated.

       See DEFAULT REMOTE, for which remote is considered 'pushed' for pruning purposes.

VERIFY REMOTE

       The --verify-remote option calls the remote to ensure that any LFS files to be deleted
       have copies on the remote before actually deleting them.

       Usually the check performed by UNPUSHED LFS FILES is enough to determine that files have
       been pushed, but if you want to be extra sure at the expense of extra overhead you can
       make prune actually call the remote API and verify the presence of the files you’re about
       to delete locally. See DEFAULT REMOTE for which remote is checked.

       You can make this behaviour the default by setting lfs.pruneverifyremotealways to true.

       In addition to the overhead of calling the remote, using this option also requires prune
       to distinguish between totally unreachable files (e.g. those that were added to the index
       but never committed, or referenced only by orphaned commits), and files which are still
       referenced, but by commits which are prunable. This makes the prune process take longer.

DEFAULT REMOTE

       When identifying UNPUSHED LFS FILES and performing VERIFY REMOTE, a single remote,
       'origin', is normally used as the reference. This one remote is considered canonical; even
       if you use multiple remotes, you probably want to retain your local copies until they’ve
       made it to that remote. 'origin' is used by default because that will usually be a main
       central repo, or your fork of it - in both cases that’s a valid remote backup of your
       work. If origin doesn’t exist then by default nothing will be pruned because everything is
       treated as 'unpushed'.

       You can alter the remote via git config: lfs.pruneremotetocheck. Set this to a different
       remote name to check that one instead of 'origin'.

SEE ALSO

       git-lfs-fetch(1), gitignore(5).

       Part of the git-lfs(1) suite.

                                            2022-12-01                           GIT-LFS-PRUNE(1)