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Jeff King 8b44deebaf Revert "transport-helper, connect: use clean_on_exit to reap children on abnormal exit" This reverts commit `dd3693eb08`. The goal of that commit was to avoid zombie child processes hanging around when the parent git process is killed. But it doesn't quite work when the child command is run by the shell: 1. If there is a shell, then we kill and wait for the shell, not the process spawned by the shell. And so the child process, even if it eventually exits, will hang around as a zombie forever. And this is true of most (all?) shells: bash, dash, etc. So we are not really accomplishing our goal in the first place. 2. Not all shells will exit immediately upon receiving a signal. In particular, mksh will wait for its children to exit (but not actually propagate the signal to them!) leaving us with a potential deadlock: git is wait()ing on mksh, which is wait()ing on a child process, but that child process is waiting on git to produce more input (or EOF) over a pipe. You can see several examples of this deadlock in the test suite, for example by running: make SHELL_PATH=/bin/mksh cd t ./t5702-protocol-v2.sh Because this is a regression for mksh users, and because we did not achieve our goal even with other shells, let's revert the commit for now. If there is a more clever way of doing the same thing, we can consider applying it separately on top (or do nothing and just accept the zombies and rely on PID 1 to reap them). Reported-by: Jan Palus <jpalus@fastmail.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>		2026-04-22 16:31:41 -07:00
.github	…
Documentation	Merge branch 'qb/doc-git-stash-push-optionality'	2026-04-06 15:42:50 -07:00
bin-wrappers	…
block-sha1	…
builtin	Merge branch 'qb/doc-git-stash-push-optionality'	2026-04-06 15:42:50 -07:00
ci	Merge branch 'ps/build-tweaks'	2026-03-27 11:00:01 -07:00
compat	compat/winansi: drop pre-Vista workaround	2026-04-06 10:06:22 -07:00
compiler-tricks	…
contrib	Merge branch 'js/cmake-needs-writev-compat-too'	2026-04-03 15:24:45 -07:00
ewah	…
git-gui	Merge branch 'master' of https://github.com/j6t/git-gui	2026-03-21 09:25:58 -07:00
gitk-git	Merge branch 'master' of https://github.com/j6t/gitk	2026-03-21 09:25:10 -07:00
gitweb	…
mergetools	…
negotiator	use commit_stack instead of prio_queue in LIFO mode	2026-03-18 10:39:56 -07:00
odb	odb: introduce generic `odb_find_abbrev_len()`	2026-03-20 13:16:42 -07:00
oss-fuzz	…
perl	…
po	Merge branch 'jx/i18n-fix' of github.com:jiangxin/gitk	2026-03-20 09:23:32 +01:00
refs	Merge branch 'vp/http-rate-limit-retries'	2026-04-01 10:28:18 -07:00
reftable	…
sha1	…
sha1collisiondetection@855827c583	…
sha1dc	…
sha256	…
src	…
subprojects	…
t	Merge branch 'th/t6101-unhide-git-failures'	2026-04-06 15:42:50 -07:00
templates	Merge branch 'pt/fsmonitor-watchman-sample-fix'	2026-03-10 14:23:23 -07:00
tools	Merge branch 'rs/use-strvec-pushv'	2026-04-01 10:28:19 -07:00
trace2	…
xdiff	Merge branch 'yc/histogram-hunk-shift-fix'	2026-03-24 12:31:34 -07:00
.cirrus.yml	…
.clang-format	…
.editorconfig	editorconfig: fix style not applying to subdirs anymore	2026-03-11 10:30:51 -07:00
.gitattributes	…
.gitignore	gitk: ignore generated POT file	2026-03-20 09:31:04 +08:00
.gitlab-ci.yml	Merge branch 'ps/ci-gitlab-prepare-for-macos-14-deprecation'	2026-03-12 10:56:04 -07:00
.gitmodules	…
.mailmap	…
.tsan-suppressions	…
CODE_OF_CONDUCT.md	…
COPYING	…
Cargo.toml	…
GIT-BUILD-OPTIONS.in	…
GIT-VERSION-FILE.in	…
GIT-VERSION-GEN	Git 2.54-rc0	2026-04-01 21:31:08 -07:00
INSTALL	…
LGPL-2.1	…
Makefile	Merge branch 'ar/config-hook-cleanups'	2026-04-03 13:01:09 -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	Merge branch 'jw/apply-corrupt-location'	2026-03-30 13:57:00 -07:00
apply.h	apply: report input location in header parsing errors	2026-03-17 11:08:24 -07:00
archive-tar.c	…
archive-zip.c	…
archive.c	…
archive.h	…
attr.c	…
attr.h	…
banned.h	…
base85.c	…
base85.h	…
bisect.c	…
bisect.h	…
blame.c	…
blame.h	…
blob.c	…
blob.h	…
bloom.c	Merge branch 'cf/constness-fixes'	2026-03-23 09:20:29 -07:00
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.h	…
cbtree.c	oidtree: extend iteration to allow for arbitrary return codes	2026-03-20 13:16:22 -07:00
cbtree.h	oidtree: extend iteration to allow for arbitrary return codes	2026-03-20 13:16:22 -07:00
chdir-notify.c	…
chdir-notify.h	…
checkout.c	…
checkout.h	…
chunk-format.c	…
chunk-format.h	…
color.c	…
color.h	…
column.c	…
column.h	…
combine-diff.c	…
command-list.txt	…
commit-graph.c	odb: introduce `struct odb_for_each_object_options`	2026-03-20 13:16:41 -07:00
commit-graph.h	…
commit-reach.c	commit-reach: simplify cleanup of remaining bitmaps in ahead_behind ()	2026-03-19 10:45:41 -07:00
commit-reach.h	…
commit-slab-decl.h	…
commit-slab-impl.h	…
commit-slab.h	…
commit.c	gpg-interface: allow sign_buffer() to use default signing key	2026-03-12 21:28:20 -07:00
commit.h	Merge branch 'ps/history-split'	2026-03-24 12:31:32 -07:00
common-exit.c	…
common-init.c	…
common-init.h	…
common-main.c	…
config.c	…
config.h	…
config.mak.dev	builds: move build scripts into "tools/"	2026-03-19 06:40:09 -07:00
config.mak.in	…
config.mak.uname	Merge branch 'ps/upload-pack-buffer-more-writes'	2026-03-24 12:31:34 -07:00
configure.ac	…
connect.c	Revert "transport-helper, connect: use clean_on_exit to reap children on abnormal exit"	2026-04-22 16:31:41 -07:00
connect.h	…
connected.c	…
connected.h	…
convert.c	…
convert.h	…
copy.c	…
copy.h	…
credential.c	…
credential.h	…
csum-file.c	Merge branch 'ps/upload-pack-buffer-more-writes'	2026-03-24 12:31:34 -07:00
csum-file.h	Merge branch 'ps/upload-pack-buffer-more-writes'	2026-03-24 12:31:34 -07:00
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 'mm/diff-no-index-find-object'	2026-03-10 14:23:22 -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 'cf/constness-fixes'	2026-03-23 09:20:29 -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-pack.c	use strvec_pushv() to add another strvec	2026-03-24 12:26:58 -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-compat-util.h: move warning infra to prepare for PCHs	2026-03-19 06:40:09 -07:00
git-curl-compat.h	http: add support for HTTP 429 rate limit retries	2026-03-17 09:14:19 -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	Merge branch 'sp/send-email-validate-charset'	2026-03-12 10:56:05 -07:00
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	use strvec_pushv() to add another strvec	2026-03-24 12:26:58 -07:00
git.rc.in	…
gpg-interface.c	fast-import: add mode to sign commits with invalid signatures	2026-03-12 21:28:20 -07:00
gpg-interface.h	fast-import: add mode to sign commits with invalid signatures	2026-03-12 21:28:20 -07:00
graph.c	…
graph.h	…
grep.c	…
grep.h	…
hash-lookup.c	…
hash-lookup.h	…
hash.c	object-name: simplify computing common prefixes	2026-03-20 13:16:42 -07:00
hash.h	object-name: simplify computing common prefixes	2026-03-20 13:16:42 -07:00
hashmap.c	…
hashmap.h	…
help.c	Merge branch 'jh/alias-i18n-fixes'	2026-03-10 14:23:24 -07:00
help.h	…
hex-ll.c	…
hex-ll.h	…
hex.c	…
hex.h	…
hook.c	hook: show disabled hooks in "git hook list"	2026-03-25 14:00:47 -07:00
hook.h	hook: show disabled hooks in "git hook list"	2026-03-25 14:00:47 -07:00
http-backend.c	…
http-fetch.c	…
http-push.c	…
http-walker.c	…
http.c	Merge branch 'vp/http-rate-limit-retries'	2026-04-01 10:28:18 -07:00
http.h	http: add support for HTTP 429 rate limit retries	2026-03-17 09:14:19 -07:00
ident.c	…
ident.h	…
imap-send.c	imap-send: move common code into function host_matches()	2026-03-11 15:25:15 -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: avoid strbuf_split_str()	2026-03-11 11:08:53 -07:00
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	Merge branch 'vp/http-rate-limit-retries'	2026-04-01 10:28:18 -07:00
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 'ps/build-tweaks'	2026-03-27 11:00:01 -07:00
meson_options.txt	…
midx-write.c	…
midx.c	Merge branch 'tb/incremental-midx-part-3.2'	2026-03-25 12:58:04 -07:00
midx.h	…
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	Merge branch 'bc/sha1-256-interop-02'	2026-03-12 10:56:02 -07:00
object-file-convert.h	…
object-file.c	Merge branch 'ps/object-counting'	2026-03-25 12:58:05 -07:00
object-file.h	object-name: move logic to compute loose abbreviation length	2026-03-20 13:16:42 -07:00
object-name.c	Merge branch 'ps/odb-generic-object-name-handling'	2026-04-06 15:42:49 -07:00
object-name.h	object-name: turn INTERPRET_BRANCH_* constants into enum values	2026-03-18 12:52:29 -07:00
object.c	…
object.h	…
odb.c	odb: introduce generic `odb_find_abbrev_len()`	2026-03-20 13:16:42 -07:00
odb.h	odb: introduce generic `odb_find_abbrev_len()`	2026-03-20 13:16:42 -07:00
oid-array.c	…
oid-array.h	…
oidmap.c	…
oidmap.h	…
oidset.c	…
oidset.h	…
oidtree.c	oidtree: extend iteration to allow for arbitrary return codes	2026-03-20 13:16:22 -07:00
oidtree.h	oidtree: extend iteration to allow for arbitrary return codes	2026-03-20 13:16:22 -07:00
pack-bitmap-write.c	…
pack-bitmap.c	Merge branch 'tb/incremental-midx-part-3.2'	2026-03-25 12:58:04 -07:00
pack-bitmap.h	…
pack-check.c	…
pack-mtimes.c	…
pack-mtimes.h	…
pack-objects.c	…
pack-objects.h	…
pack-refs.c	…
pack-refs.h	…
pack-revindex.c	Merge branch 'tb/incremental-midx-part-3.2'	2026-03-25 12:58:04 -07:00
pack-revindex.h	…
pack-write.c	…
pack.h	…
packfile.c	Merge branch 'tb/stdin-packs-excluded-but-open'	2026-04-06 15:42:49 -07:00
packfile.h	Merge branch 'tb/stdin-packs-excluded-but-open'	2026-04-06 15:42:49 -07:00
pager.c	…
pager.h	…
parallel-checkout.c	…
parallel-checkout.h	…
parse-options-cb.c	…
parse-options.c	Merge branch 'rs/parse-options-duplicated-long-options'	2026-03-10 14:23:19 -07:00
parse-options.h	…
parse.c	…
parse.h	…
patch-delta.c	…
patch-ids.c	…
patch-ids.h	…
path-walk.c	path-walk: support wildcard pathspecs for blob filtering	2026-03-26 09:38:07 -07:00
path-walk.h	…
path.c	backfill: work with prefix pathspecs	2026-03-26 09:38:06 -07:00
path.h	backfill: work with prefix pathspecs	2026-03-26 09:38:06 -07:00
pathspec.c	…
pathspec.h	…
pkt-line.c	…
pkt-line.h	…
preload-index.c	…
preload-index.h	…
pretty.c	Merge branch 'mf/format-patch-cover-letter-format'	2026-04-03 13:01:08 -07:00
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	apply: report input location in header parsing errors	2026-03-17 11:08:24 -07:00
range-diff.h	…
reachable.c	…
reachable.h	…
read-cache-ll.h	…
read-cache.c	Merge branch 'cs/add-skip-submodule-ignore-all'	2026-03-09 14:36:55 -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	Merge branch 'ar/config-hook-cleanups'	2026-04-03 13:01:09 -07:00
refs.h	object-name: turn INTERPRET_BRANCH_* constants into enum values	2026-03-18 12:52:29 -07:00
refspec.c	refspec: fix typo in comment	2026-03-23 21:27:17 -07:00
refspec.h	…
remote-curl.c	Merge branch 'kj/refspec-parsing-outside-repository'	2026-04-01 10:28:19 -07:00
remote.c	Merge branch 'hn/status-compare-with-push'	2026-03-12 14:09:06 -07:00
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 'tc/replay-down-to-root'	2026-04-06 15:42:49 -07:00
replay.h	replay: add --revert mode to reverse commit changes	2026-03-25 14:21:20 -07:00
repo-settings.c	…
repo-settings.h	…
repository.c	Merge branch 'ps/object-counting'	2026-03-25 12:58:05 -07:00
repository.h	Merge branch 'bc/sha1-256-interop-02'	2026-03-12 10:56:02 -07:00
rerere.c	Merge branch 'jc/rerere-modern-strbuf-handling'	2026-03-27 11:00:03 -07:00
rerere.h	…
reset.c	…
reset.h	…
resolve-undo.c	…
resolve-undo.h	…
revision.c	…
revision.h	revision: include object-name.h	2026-03-26 09:38:06 -07:00
run-command.c	Merge branch 'bk/run-command-wo-the-repository'	2026-03-19 09:54:56 -07:00
run-command.h	Merge branch 'bk/run-command-wo-the-repository'	2026-03-19 09:54:56 -07:00
sane-ctype.h	…
scalar.c	…
send-pack.c	gpg-interface: allow sign_buffer() to use default signing key	2026-03-12 21:28:20 -07:00
send-pack.h	…
sequencer.c	Merge branch 'sa/replay-revert'	2026-04-03 13:01:09 -07:00
sequencer.h	Merge branch 'sa/replay-revert'	2026-04-03 13:01:09 -07:00
serve.c	…
serve.h	…
server-info.c	…
server-info.h	…
setup.c	Merge branch 'ty/setup-error-tightening'	2026-03-16 10:48:14 -07:00
setup.h	Merge branch 'ty/setup-error-tightening'	2026-03-16 10:48:14 -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: use writev(3p) to send pktlines	2026-03-13 08:54:14 -07:00
sideband.h	…
sigchain.c	…
sigchain.h	…
simple-ipc.h	…
sparse-index.c	…
sparse-index.h	…
split-index.c	split-index: stop using the_repository and the_hash_algo	2026-03-19 12:01:24 -07:00
split-index.h	…
stable-qsort.c	…
statinfo.c	…
statinfo.h	…
strbuf.c	Merge branch 'vp/http-rate-limit-retries'	2026-04-01 10:28:18 -07:00
strbuf.h	…
string-list.c	hook: move unsorted_string_list_remove() to string-list.[ch]	2026-03-25 14:00:45 -07:00
string-list.h	hook: move unsorted_string_list_remove() to string-list.[ch]	2026-03-25 14:00:45 -07:00
strmap.c	…
strmap.h	…
strvec.c	…
strvec.h	…
sub-process.c	…
sub-process.h	…
submodule-config.c	odb: stop including "odb/source.h"	2026-03-12 08:38:42 -07:00
submodule-config.h	…
submodule.c	Merge branch 'rs/use-strvec-pushv'	2026-04-01 10:28:19 -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	odb: stop including "odb/source.h"	2026-03-12 08:38:42 -07:00
tmp-objdir.h	…
trace.c	…
trace.h	…
trace2.c	…
trace2.h	…
trailer.c	Merge branch 'vp/http-rate-limit-retries'	2026-04-01 10:28:18 -07:00
trailer.h	…
transport-helper.c	Revert "transport-helper, connect: use clean_on_exit to reap children on abnormal exit"	2026-04-22 16:31:41 -07:00
transport-internal.h	…
transport.c	Merge branch 'ar/config-hook-cleanups'	2026-04-03 13:01:09 -07:00
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	…
unpack-trees.h	…
upload-pack.c	Merge branch 'ps/upload-pack-buffer-more-writes'	2026-03-24 12:31:34 -07:00
upload-pack.h	…
url.c	…
url.h	…
urlmatch.c	…
urlmatch.h	…
usage.c	…
userdiff.c	…
userdiff.h	…
utf8.c	…
utf8.h	…
varint.c	…
varint.h	…
version-def.h.in	…
version.c	…
version.h	…
versioncmp.c	…
versioncmp.h	…
walker.c	…
walker.h	…
wildmatch.c	…
wildmatch.h	…
worktree.c	Merge branch 'pw/worktree-reduce-the-repository'	2026-04-03 13:01:09 -07:00
worktree.h	Merge branch 'pw/worktree-reduce-the-repository'	2026-04-03 13:01:09 -07:00
wrapper.c	Merge branch 'ps/upload-pack-buffer-more-writes'	2026-03-24 12:31:34 -07:00
wrapper.h	wrapper: introduce writev(3p) wrappers	2026-03-13 08:54:14 -07:00
write-or-die.c	wrapper: introduce writev(3p) wrappers	2026-03-13 08:54:14 -07:00
write-or-die.h	Merge branch 'ps/upload-pack-buffer-more-writes'	2026-03-24 12:31:34 -07:00
ws.c	…
ws.h	…
wt-status.c	Merge branch 'sp/wt-status-wo-the-repository'	2026-03-16 10:48:14 -07:00
wt-status.h	…
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