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Maciej Ciemborowicz d79b73c2a9 refs: allow callers to supply old OIDs for batch deletion refs_delete_refs() performs unconditional deletions, so callers cannot preserve old values that they have already resolved. Consequently, reference-transaction hooks see a null old OID. Let callers provide an optional array of expected old OIDs in parallel with the refname list. When the array is provided, delete the ref at position N only if it still points at the OID at position N. A null OID requests an unconditional deletion for refs whose old value cannot be resolved, such as broken refs. Use REF_TRANSACTION_ALLOW_FAILURE when old OIDs are supplied. This retains the helper's best-effort behavior: an old-OID mismatch rejects that deletion while independent deletions in the batch can still proceed. Signed-off-by: Maciej Ciemborowicz <maciej.ciemborowicz@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>		2026-09-22 10:54:48 -07:00
.github	Merge branch 'js/rust-in-windows-ci'	2026-09-16 09:04:55 -07:00
Documentation	Git 2.56-rc2	2026-09-22 05:36:33 -07:00
bin-wrappers	…
block-sha1	…
builtin	refs: allow callers to supply old OIDs for batch deletion	2026-09-22 10:54:48 -07:00
ci	Merge branch 'js/rust-in-windows-ci'	2026-09-16 09:04:55 -07:00
compat	Merge branch 'js/mingw-build-updates'	2026-09-11 09:45:10 -07:00
compiler-tricks	…
contrib	cmake(windows): accommodate for Git for Windows' migration to UCRT64	2026-09-13 16:01:18 -07:00
ewah	…
git-gui	…
gitk-git	Merge branch 'master' of https://github.com/j6t/gitk	2026-09-11 09:03:58 -07:00
gitweb	…
mergetools	…
negotiator	…
odb	Merge branch 'ps/odb-pluggable-fsck'	2026-09-15 11:07:37 -07:00
oss-fuzz	Merge branch 'js/pack-objects-delta-size-t'	2026-08-24 13:17:51 -07:00
perl	…
po	…
refs	Merge branch 'kn/reftable-optimize-reloading'	2026-09-07 09:32:05 -07:00
reftable	Merge branch 'kn/reftable-optimize-reloading'	2026-09-07 09:32:05 -07:00
sha1	…
sha1collisiondetection@855827c583	…
sha1dc	…
sha256	…
src	rust: respect CARGO_BUILD_TARGET when locating build output	2026-09-10 06:37:09 -07:00
subprojects	…
t	refs: allow callers to supply old OIDs for batch deletion	2026-09-22 10:54:48 -07:00
templates	…
tools	…
trace2	…
xdiff	…
.b4-config	…
.b4-cover-template	…
.cirrus.yml	…
.clang-format	…
.editorconfig	…
.gitattributes	…
.gitignore	…
.gitlab-ci.yml	Merge branch 'jk/ci-bump-debian-to-12'	2026-09-11 09:45:10 -07:00
.gitmodules	…
.mailmap	mailmap: normalize name for Yoichi NAKAYAMA	2026-09-17 09:43:13 -07:00
.tsan-suppressions	…
CODE_OF_CONDUCT.md	…
COPYING	…
Cargo.toml	…
GIT-BUILD-OPTIONS.in	…
GIT-VERSION-FILE.in	…
GIT-VERSION-GEN	Git 2.56-rc2	2026-09-22 05:36:33 -07:00
INSTALL	…
LGPL-2.1	…
Makefile	Merge branch 'js/rust-in-windows-ci'	2026-09-16 09:04:55 -07:00
README.md	…
RelNotes	…
SECURITY.md	…
abspath.c	…
abspath.h	…
aclocal.m4	…
add-interactive.c	…
add-interactive.h	…
add-patch.c	…
add-patch.h	…
advice.c	…
advice.h	…
alias.c	…
alias.h	…
alloc.c	…
alloc.h	…
apply.c	…
apply.h	…
archive-tar.c	…
archive-zip.c	Merge branch 'js/pack-objects-delta-size-t'	2026-08-24 13:17:51 -07:00
archive.c	…
archive.h	…
attr.c	…
attr.h	…
banned.h	…
base85.c	…
base85.h	…
bisect.c	refs: allow callers to supply old OIDs for batch deletion	2026-09-22 10:54:48 -07:00
bisect.h	…
blame.c	…
blame.h	…
blob.c	…
blob.h	…
bloom.c	…
bloom.h	…
branch.c	…
branch.h	…
build.rs	…
builtin.h	…
bundle-uri.c	…
bundle-uri.h	…
bundle.c	…
bundle.h	…
cache-tree.c	cache-tree: remove dependency on `the_repository`	2026-09-11 08:46:09 -07:00
cache-tree.h	cache-tree: remove dependency on `the_repository`	2026-09-11 08:46:09 -07:00
cbtree.c	…
cbtree.h	…
chdir-notify.c	…
chdir-notify.h	…
checkout.c	checkout: improve message for ambiguous remote branch name	2026-08-27 10:29:43 -07:00
checkout.h	checkout: improve message for ambiguous remote branch name	2026-08-27 10:29:43 -07:00
chunk-format.c	…
chunk-format.h	…
color.c	…
color.h	…
column.c	…
column.h	…
combine-diff.c	…
command-list.txt	doc: git: list gitdatamodel(7) as a concept guide	2026-09-05 17:37:49 -07:00
commit-graph.c	…
commit-graph.h	…
commit-reach.c	…
commit-reach.h	…
commit-slab-decl.h	…
commit-slab-impl.h	…
commit-slab.h	…
commit.c	…
commit.h	…
common-exit.c	…
common-init.c	…
common-init.h	…
common-main.c	…
config.c	Merge branch 'js/pack-objects-delta-size-t'	2026-08-24 13:17:51 -07:00
config.h	…
config.mak.dev	…
config.mak.in	…
config.mak.uname	Merge branch 'js/rust-in-windows-ci'	2026-09-16 09:04:55 -07:00
configure.ac	…
connect.c	…
connect.h	…
connected.c	…
connected.h	…
convert.c	…
convert.h	…
copy.c	…
copy.h	…
credential.c	…
credential.h	…
csum-file.c	…
csum-file.h	…
ctype.c	…
daemon.c	…
date.c	…
date.h	…
decorate.c	…
decorate.h	…
delta-islands.c	…
delta-islands.h	…
delta.h	…
diagnose.c	…
diagnose.h	…
diff-delta.c	…
diff-lib.c	…
diff-merges.c	…
diff-merges.h	…
diff-no-index.c	…
diff.c	Merge branch 'en/diff-l-opt-help'	2026-08-24 13:17:51 -07:00
diff.h	…
diffcore-break.c	…
diffcore-delta.c	…
diffcore-order.c	…
diffcore-pickaxe.c	…
diffcore-rename.c	…
diffcore-rotate.c	…
diffcore.h	…
dir-iterator.c	…
dir-iterator.h	…
dir.c	Merge branch 'yt/pathspec-negative-prefix'	2026-09-17 09:48:17 -07:00
dir.h	…
editor.c	…
editor.h	…
entry.c	…
entry.h	…
environment.c	…
environment.h	…
exec-cmd.c	…
exec-cmd.h	…
fetch-negotiator.c	…
fetch-negotiator.h	…
fetch-object-info.c	…
fetch-object-info.h	…
fetch-pack.c	Merge branch 'tn/fetch-pack-trace-packfile-uri'	2026-09-13 21:53:30 -07:00
fetch-pack.h	…
fmt-merge-msg.c	…
fmt-merge-msg.h	…
for-each-ref.h	…
fsck.c	…
fsck.h	…
fsmonitor--daemon.h	…
fsmonitor-ipc.c	…
fsmonitor-ipc.h	…
fsmonitor-ll.h	…
fsmonitor-path-utils.h	…
fsmonitor-settings.c	…
fsmonitor-settings.h	…
fsmonitor.c	…
fsmonitor.h	…
gettext.c	…
gettext.h	…
git-archimport.perl	…
git-compat-util.h	…
git-curl-compat.h	imap-send: add --draft to set IMAP \Draft flag	2026-09-02 08:35:33 -07:00
git-cvsexportcommit.perl	…
git-cvsimport.perl	…
git-cvsserver.perl	…
git-difftool--helper.sh	…
git-filter-branch.sh	…
git-instaweb.sh	…
git-merge-octopus.sh	…
git-merge-one-file.sh	…
git-merge-resolve.sh	…
git-mergetool--lib.sh	…
git-mergetool.sh	…
git-p4.py	…
git-quiltimport.sh	…
git-request-pull.sh	…
git-send-email.perl	…
git-sh-i18n.sh	…
git-sh-setup.sh	…
git-submodule.sh	…
git-svn.perl	…
git-web--browse.sh	…
git-zlib.c	…
git-zlib.h	…
git.c	Merge branch 'ty/repository-fetch-if-missing'	2026-09-02 09:21:59 -07:00
git.rc.in	…
gpg-interface.c	…
gpg-interface.h	…
graph.c	…
graph.h	…
grep.c	…
grep.h	…
hash-lookup.c	…
hash-lookup.h	…
hash.c	…
hash.h	…
hashmap.c	…
hashmap.h	…
help.c	…
help.h	…
hex-ll.c	…
hex-ll.h	…
hex.c	…
hex.h	…
hook.c	…
hook.h	…
http-backend.c	…
http-fetch.c	…
http-push.c	Merge branch 'js/pack-objects-delta-size-t'	2026-08-24 13:17:51 -07:00
http-walker.c	…
http.c	…
http.h	…
ident.c	…
ident.h	…
imap-send.c	Merge branch 'wf/imap-send-draft'	2026-09-14 14:02:52 -07:00
iterator.h	…
json-writer.c	…
json-writer.h	…
khash.h	…
kwset.c	…
kwset.h	…
levenshtein.c	…
levenshtein.h	…
line-log.c	…
line-log.h	…
line-range.c	…
line-range.h	…
linear-assignment.c	…
linear-assignment.h	…
list-objects-filter-options.c	…
list-objects-filter-options.h	…
list-objects-filter.c	…
list-objects-filter.h	…
list-objects.c	…
list-objects.h	…
list.h	…
lockfile.c	…
lockfile.h	…
log-tree.c	…
log-tree.h	…
loose.c	…
loose.h	…
ls-refs.c	…
ls-refs.h	…
mailinfo.c	…
mailinfo.h	…
mailmap.c	…
mailmap.h	…
match-trees.c	…
match-trees.h	…
mem-pool.c	…
mem-pool.h	…
merge-blobs.c	…
merge-blobs.h	…
merge-ll.c	…
merge-ll.h	…
merge-ort-wrappers.c	…
merge-ort-wrappers.h	…
merge-ort.c	…
merge-ort.h	…
merge.c	…
merge.h	…
mergesort.h	…
meson.build	Merge branch 'js/mingw-build-updates'	2026-09-11 09:45:10 -07:00
meson_options.txt	mingw: allow `git.exe` to be used instead of the "Git wrapper"	2026-09-10 05:19:43 -07:00
midx-write.c	…
midx.c	packfile: recover when a multi-pack-index names a removed pack	2026-08-30 13:37:42 -07:00
midx.h	packfile: recover when a multi-pack-index names a removed pack	2026-08-30 13:37:42 -07:00
name-hash.c	…
name-hash.h	…
notes-cache.c	…
notes-cache.h	…
notes-merge.c	…
notes-merge.h	…
notes-utils.c	…
notes-utils.h	…
notes.c	…
notes.h	…
object-file-convert.c	…
object-file-convert.h	…
object-file.c	Merge branch 'jt/receive-pack-pluggable-writes'	2026-08-31 08:25:00 -07:00
object-file.h	…
object-name.c	Merge branch 'ps/odb-eagerly-load-alternates'	2026-08-31 08:24:59 -07:00
object-name.h	…
object.c	…
object.h	…
odb.c	Merge branch 'ps/odb-pluggable-fsck'	2026-09-15 11:07:37 -07:00
odb.h	Merge branch 'ps/odb-pluggable-fsck'	2026-09-15 11:07:37 -07:00
oid-array.c	…
oid-array.h	…
oidmap.c	…
oidmap.h	…
oidset.c	…
oidset.h	…
oidtree.c	…
oidtree.h	…
pack-bitmap-write.c	…
pack-bitmap.c	builtin/fsck: move bitmap verification into the packed source	2026-09-11 09:14:44 -07:00
pack-bitmap.h	builtin/fsck: move bitmap verification into the packed source	2026-09-11 09:14:44 -07:00
pack-check.c	Merge branch 'js/pack-objects-delta-size-t'	2026-08-24 13:17:51 -07:00
pack-mtimes.c	…
pack-mtimes.h	…
pack-objects.c	…
pack-objects.h	…
pack-refs.c	…
pack-refs.h	…
pack-revindex.c	…
pack-revindex.h	…
pack-write.c	…
pack.h	…
packfile-list.c	…
packfile-list.h	…
packfile.c	Merge branch 'ps/odb-eagerly-load-alternates'	2026-08-31 08:24:59 -07:00
packfile.h	Merge branch 'ps/odb-eagerly-load-alternates'	2026-08-31 08:24:59 -07:00
pager.c	…
pager.h	…
parallel-checkout.c	…
parallel-checkout.h	…
parse-options-cb.c	…
parse-options.c	…
parse-options.h	…
parse.c	…
parse.h	…
patch-delta.c	…
patch-ids.c	…
patch-ids.h	…
path-walk.c	…
path-walk.h	…
path.c	…
path.h	…
pathspec.c	Merge branch 'jc/pathspec-match-const'	2026-09-13 21:53:29 -07:00
pathspec.h	pathspec: match and original in pathspec_item are const	2026-09-03 11:24:01 -07:00
pkt-line.c	…
pkt-line.h	…
preload-index.c	…
preload-index.h	…
pretty.c	…
pretty.h	…
prio-queue.c	…
prio-queue.h	…
progress.c	…
progress.h	…
promisor-remote.c	…
promisor-remote.h	…
prompt.c	…
prompt.h	…
protocol-caps.c	…
protocol-caps.h	…
protocol.c	…
protocol.h	…
prune-packed.c	…
prune-packed.h	…
pseudo-merge.c	…
pseudo-merge.h	…
quote.c	…
quote.h	…
range-diff.c	…
range-diff.h	…
reachable.c	…
reachable.h	…
read-cache-ll.h	cache-tree: remove dependency on `the_repository`	2026-09-11 08:46:09 -07:00
read-cache.c	cache-tree: remove dependency on `the_repository`	2026-09-11 08:46:09 -07:00
read-cache.h	…
rebase-interactive.c	…
rebase-interactive.h	…
rebase.c	…
rebase.h	…
ref-filter.c	…
ref-filter.h	…
reflog-walk.c	…
reflog-walk.h	…
reflog.c	…
reflog.h	…
refs.c	refs: allow callers to supply old OIDs for batch deletion	2026-09-22 10:54:48 -07:00
refs.h	refs: allow callers to supply old OIDs for batch deletion	2026-09-22 10:54:48 -07:00
refspec.c	…
refspec.h	…
remote-curl.c	…
remote.c	…
remote.h	…
repack-cruft.c	…
repack-filtered.c	…
repack-geometry.c	…
repack-midx.c	…
repack-promisor.c	…
repack.c	…
repack.h	…
replace-object.c	…
replace-object.h	…
replay.c	Merge branch 'en/midx-missing-pack-fallback'	2026-09-10 05:36:17 -07:00
replay.h	replay: offer an option to linearize the commit topology	2026-08-31 10:29:06 -07:00
repo-settings.c	…
repo-settings.h	…
repository.c	Merge branch 'jk/submodule-error-leak'	2026-09-13 21:53:29 -07:00
repository.h	…
rerere.c	builtin/maintenance: improve heuristic for "rerere gc"	2026-09-04 07:27:14 -07:00
rerere.h	builtin/maintenance: improve heuristic for "rerere gc"	2026-09-04 07:27:14 -07:00
reset.c	…
reset.h	…
resolve-undo.c	…
resolve-undo.h	…
revision.c	Merge branch 'jk/rev-info-argv-to-free'	2026-09-10 05:36:17 -07:00
revision.h	revision: hang on to "freed" argv elements	2026-09-01 11:03:56 -07:00
run-command.c	…
run-command.h	…
sane-ctype.h	…
scalar.c	…
send-pack.c	…
send-pack.h	…
sequencer.c	Merge branch 'ps/odb-stop-registering-in-memory-sources'	2026-09-15 11:07:36 -07:00
sequencer.h	Merge branch 'hn/checkout-m-autostash-refine'	2026-09-14 14:02:53 -07:00
serve.c	Merge branch 'en/serve-promisor-remote-fix'	2026-08-24 13:17:51 -07:00
serve.h	…
server-info.c	…
server-info.h	…
setup.c	Merge branch 'yn/worktree-repair-relative'	2026-09-07 09:32:06 -07:00
setup.h	worktree repair: detect relative path in .git file correctly	2026-08-28 10:22:04 -07:00
sh-i18n--envsubst.c	…
sha1dc_git.c	…
sha1dc_git.h	…
shallow.c	…
shallow.h	…
shared.mak	…
shell.c	…
shortlog.h	…
sideband.c	…
sideband.h	…
sigchain.c	…
sigchain.h	…
simple-ipc.h	…
sparse-index.c	cache-tree: drop `the_repository` in `cache_tree_fully_valid()`	2026-09-11 08:46:09 -07:00
sparse-index.h	…
split-index.c	…
split-index.h	…
stable-qsort.c	…
stash.h	stash: reserve exit status 1 for conflicts	2026-09-03 11:32:36 -07:00
statinfo.c	…
statinfo.h	…
strbuf.c	…
strbuf.h	…
string-list.c	…
string-list.h	…
strmap.c	…
strmap.h	…
strvec.c	…
strvec.h	…
sub-process.c	…
sub-process.h	…
submodule-config.c	submodule-config: stop registering submodule sources	2026-09-11 08:46:10 -07:00
submodule-config.h	submodule-config: remove uses of `the_repository`	2026-09-11 08:46:10 -07:00
submodule.c	submodule-config: remove uses of `the_repository`	2026-09-11 08:46:10 -07:00
submodule.h	…
symlinks.c	…
symlinks.h	…
tag.c	…
tag.h	…
tar.h	…
tempfile.c	…
tempfile.h	…
thread-utils.c	…
thread-utils.h	…
tmp-objdir.c	tmp-objdir: drop unused function to register alternate	2026-09-11 08:46:10 -07:00
tmp-objdir.h	tmp-objdir: drop unused function to register alternate	2026-09-11 08:46:10 -07:00
trace.c	…
trace.h	…
trace2.c	…
trace2.h	…
trailer.c	…
trailer.h	…
transport-helper.c	…
transport-internal.h	…
transport.c	…
transport.h	…
tree-diff.c	…
tree-walk.c	…
tree-walk.h	…
tree.c	…
tree.h	…
unicode-width.h	…
unimplemented.sh	…
unix-socket.c	…
unix-socket.h	…
unix-stream-server.c	…
unix-stream-server.h	…
unpack-trees.c	cache-tree: remove dependency on `the_repository`	2026-09-11 08:46:09 -07:00
unpack-trees.h	…
upload-pack.c	…
upload-pack.h	…
url.c	…
url.h	…
urlmatch.c	…
urlmatch.h	…
usage.c	Merge branch 'jc/you-still-use-that'	2026-09-07 09:32:05 -07:00
userdiff.c	…
userdiff.h	…
utf8.c	…
utf8.h	…
varint.c	…
varint.h	…
version-def.h.in	…
version.c	…
version.h	…
versioncmp.c	versioncmp: fix typo in versioncmp.c, t/t0022-crlf-rename.sh	2026-08-31 13:47:04 -07:00
versioncmp.h	…
walker.c	…
walker.h	…
wildmatch.c	…
wildmatch.h	…
worktree.c	worktree repair: detect relative path in .git file correctly	2026-08-28 10:22:04 -07:00
worktree.h	…
wrapper.c	…
wrapper.h	…
write-or-die.c	…
write-or-die.h	…
ws.c	…
ws.h	…
wt-status.c	…
wt-status.h	commit: clarify FROM_REBASE_PICK and is_from_rebase() names	2026-09-01 21:24:33 -07:00
xdiff-interface.c	…
xdiff-interface.h	…

README.md

Git - fast, scalable, distributed revision control system

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.

Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.

See Documentation/gittutorial.adoc to get started, then see Documentation/giteveryday.adoc for a useful minimum set of commands, and Documentation/git-<commandname>.adoc for documentation of each command. If git has been correctly installed, then the tutorial can also be read with man gittutorial or git help tutorial, and the documentation of each command with man git-<commandname> or git help <commandname>.

CVS users may also want to read Documentation/gitcvs-migration.adoc (man gitcvs-migration or git help cvs-migration if git is installed).

The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission and Documentation/CodingGuidelines).

Those wishing to help with error message, usage and informational message string translations (localization l10) should see po/README.md (a po file is a Portable Object file that holds the translations).

To subscribe to the list, send an email to git+subscribe@vger.kernel.org (see https://subspace.kernel.org/subscribing.html for details). The mailing list archives are available at https://lore.kernel.org/git/, https://marc.info/?l=git and other archival sites.

Issues which are security relevant should be disclosed privately to the Git Security mailing list git-security@googlegroups.com.

The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.

The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):

random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
"global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
"goddamn idiotic truckload of sh*t": when it breaks