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-rw-r--r--Documentation/RelNotes/2.10.5.txt17
-rw-r--r--Documentation/RelNotes/2.11.4.txt17
-rw-r--r--Documentation/RelNotes/2.12.5.txt17
-rw-r--r--Documentation/RelNotes/2.13.6.txt17
-rw-r--r--Documentation/RelNotes/2.14.2.txt11
-rw-r--r--Documentation/RelNotes/2.14.3.txt75
-rw-r--r--Documentation/git-add.txt3
-rw-r--r--Documentation/git-branch.txt4
-rw-r--r--Documentation/git-cat-file.txt2
-rw-r--r--Documentation/git-checkout.txt32
-rw-r--r--Documentation/git-for-each-ref.txt36
-rw-r--r--Documentation/git-grep.txt6
-rw-r--r--Documentation/git-notes.txt2
-rw-r--r--Documentation/git-read-tree.txt2
-rw-r--r--Documentation/git-shell.txt16
-rw-r--r--Documentation/git-status.txt2
-rw-r--r--Documentation/git-tag.txt7
-rw-r--r--Documentation/git-update-index.txt2
-rw-r--r--Documentation/git.txt2
-rw-r--r--Documentation/gitattributes.txt5
-rw-r--r--Documentation/glossary-content.txt2
-rw-r--r--Documentation/merge-strategies.txt3
-rw-r--r--Documentation/pull-fetch-param.txt6
23 files changed, 244 insertions, 42 deletions
diff --git a/Documentation/RelNotes/2.10.5.txt b/Documentation/RelNotes/2.10.5.txt
new file mode 100644
index 0000000000..a498fd6fdc
--- /dev/null
+++ b/Documentation/RelNotes/2.10.5.txt
@@ -0,0 +1,17 @@
+Git v2.10.5 Release Notes
+=========================
+
+Fixes since v2.10.4
+-------------------
+
+ * "git cvsserver" no longer is invoked by "git daemon" by default,
+ as it is old and largely unmaintained.
+
+ * Various Perl scripts did not use safe_pipe_capture() instead of
+ backticks, leaving them susceptible to end-user input. They have
+ been corrected.
+
+Credits go to joernchen <joernchen@phenoelit.de> for finding the
+unsafe constructs in "git cvsserver", and to Jeff King at GitHub for
+finding and fixing instances of the same issue in other scripts.
+
diff --git a/Documentation/RelNotes/2.11.4.txt b/Documentation/RelNotes/2.11.4.txt
new file mode 100644
index 0000000000..ad4da8eb09
--- /dev/null
+++ b/Documentation/RelNotes/2.11.4.txt
@@ -0,0 +1,17 @@
+Git v2.11.4 Release Notes
+=========================
+
+Fixes since v2.11.3
+-------------------
+
+ * "git cvsserver" no longer is invoked by "git daemon" by default,
+ as it is old and largely unmaintained.
+
+ * Various Perl scripts did not use safe_pipe_capture() instead of
+ backticks, leaving them susceptible to end-user input. They have
+ been corrected.
+
+Credits go to joernchen <joernchen@phenoelit.de> for finding the
+unsafe constructs in "git cvsserver", and to Jeff King at GitHub for
+finding and fixing instances of the same issue in other scripts.
+
diff --git a/Documentation/RelNotes/2.12.5.txt b/Documentation/RelNotes/2.12.5.txt
new file mode 100644
index 0000000000..8fa73cfce7
--- /dev/null
+++ b/Documentation/RelNotes/2.12.5.txt
@@ -0,0 +1,17 @@
+Git v2.12.5 Release Notes
+=========================
+
+Fixes since v2.12.4
+-------------------
+
+ * "git cvsserver" no longer is invoked by "git daemon" by default,
+ as it is old and largely unmaintained.
+
+ * Various Perl scripts did not use safe_pipe_capture() instead of
+ backticks, leaving them susceptible to end-user input. They have
+ been corrected.
+
+Credits go to joernchen <joernchen@phenoelit.de> for finding the
+unsafe constructs in "git cvsserver", and to Jeff King at GitHub for
+finding and fixing instances of the same issue in other scripts.
+
diff --git a/Documentation/RelNotes/2.13.6.txt b/Documentation/RelNotes/2.13.6.txt
new file mode 100644
index 0000000000..afcae9c808
--- /dev/null
+++ b/Documentation/RelNotes/2.13.6.txt
@@ -0,0 +1,17 @@
+Git v2.13.6 Release Notes
+=========================
+
+Fixes since v2.13.5
+-------------------
+
+ * "git cvsserver" no longer is invoked by "git daemon" by default,
+ as it is old and largely unmaintained.
+
+ * Various Perl scripts did not use safe_pipe_capture() instead of
+ backticks, leaving them susceptible to end-user input. They have
+ been corrected.
+
+Credits go to joernchen <joernchen@phenoelit.de> for finding the
+unsafe constructs in "git cvsserver", and to Jeff King at GitHub for
+finding and fixing instances of the same issue in other scripts.
+
diff --git a/Documentation/RelNotes/2.14.2.txt b/Documentation/RelNotes/2.14.2.txt
index bcfe78f59d..bec9186ade 100644
--- a/Documentation/RelNotes/2.14.2.txt
+++ b/Documentation/RelNotes/2.14.2.txt
@@ -91,4 +91,15 @@ Fixes since v2.14.1
* "git archive" did not work well with pathspecs and the
export-ignore attribute.
+ * "git cvsserver" no longer is invoked by "git daemon" by default,
+ as it is old and largely unmaintained.
+
+ * Various Perl scripts did not use safe_pipe_capture() instead of
+ backticks, leaving them susceptible to end-user input. They have
+ been corrected.
+
Also contains various documentation updates and code clean-ups.
+
+Credits go to joernchen <joernchen@phenoelit.de> for finding the
+unsafe constructs in "git cvsserver", and to Jeff King at GitHub for
+finding and fixing instances of the same issue in other scripts.
diff --git a/Documentation/RelNotes/2.14.3.txt b/Documentation/RelNotes/2.14.3.txt
new file mode 100644
index 0000000000..61f569aa9a
--- /dev/null
+++ b/Documentation/RelNotes/2.14.3.txt
@@ -0,0 +1,75 @@
+Git v2.14.3 Release Notes
+=========================
+
+Fixes since v2.14.2
+-------------------
+
+ * A helper function to read a single whole line into strbuf
+ mistakenly triggered OOM error at EOF under certain conditions,
+ which has been fixed.
+
+ * In addition to "cc: <a@dd.re.ss> # cruft", "cc: a@dd.re.ss # cruft"
+ was taught to "git send-email" as a valid way to tell it that it
+ needs to also send a carbon copy to <a@dd.re.ss> in the trailer
+ section.
+
+ * Fix regression to "gitk --bisect" by a recent update.
+
+ * Unlike "git commit-tree < file", "git commit-tree -F file" did not
+ pass the contents of the file verbatim and instead completed an
+ incomplete line at the end, if exists. The latter has been updated
+ to match the behaviour of the former.
+
+ * "git archive", especially when used with pathspec, stored an empty
+ directory in its output, even though Git itself never does so.
+ This has been fixed.
+
+ * API error-proofing which happens to also squelch warnings from GCC.
+
+ * "git gc" tries to avoid running two instances at the same time by
+ reading and writing pid/host from and to a lock file; it used to
+ use an incorrect fscanf() format when reading, which has been
+ corrected.
+
+ * The test linter has been taught that we do not like "echo -e".
+
+ * Code cmp.std.c nitpick.
+
+ * "git describe --match" learned to take multiple patterns in v2.13
+ series, but the feature ignored the patterns after the first one
+ and did not work at all. This has been fixed.
+
+ * "git cat-file --textconv" started segfaulting recently, which
+ has been corrected.
+
+ * The built-in pattern to detect the "function header" for HTML did
+ not match <H1>..<H6> elements without any attributes, which has
+ been fixed.
+
+ * "git mailinfo" was loose in decoding quoted printable and produced
+ garbage when the two letters after the equal sign are not
+ hexadecimal. This has been fixed.
+
+ * The documentation for '-X<option>' for merges was misleadingly
+ written to suggest that "-s theirs" exists, which is not the case.
+
+ * Spell the name of our system as "Git" in the output from
+ request-pull script.
+
+ * Fixes for a handful memory access issues identified by valgrind.
+
+ * Backports a moral equivalent of 2015 fix to the poll emulation from
+ the upstream gnulib to fix occasional breakages on HPE NonStop.
+
+ * In the "--format=..." option of the "git for-each-ref" command (and
+ its friends, i.e. the listing mode of "git branch/tag"), "%(atom:)"
+ (e.g. "%(refname:)", "%(body:)" used to error out. Instead, treat
+ them as if the colon and an empty string that follows it were not
+ there.
+
+ * Users with "color.ui = always" in their configuration were broken
+ by a recent change that made plumbing commands to pay attention to
+ them as the patch created internally by "git add -p" were colored
+ (heh) and made unusable. This has been fixed.
+
+Also contains various documentation updates and code clean-ups.
diff --git a/Documentation/git-add.txt b/Documentation/git-add.txt
index f4169fb1ec..b700beaff5 100644
--- a/Documentation/git-add.txt
+++ b/Documentation/git-add.txt
@@ -61,6 +61,9 @@ OPTIONS
the working tree. Note that older versions of Git used
to ignore removed files; use `--no-all` option if you want
to add modified or new files but ignore removed ones.
++
+For more details about the <pathspec> syntax, see the 'pathspec' entry
+in linkgit:gitglossary[7].
-n::
--dry-run::
diff --git a/Documentation/git-branch.txt b/Documentation/git-branch.txt
index d0b3358771..7463dc44a7 100644
--- a/Documentation/git-branch.txt
+++ b/Documentation/git-branch.txt
@@ -92,10 +92,10 @@ OPTIONS
all changes made to the branch ref, enabling use of date
based sha1 expressions such as "<branchname>@\{yesterday}".
Note that in non-bare repositories, reflogs are usually
- enabled by default by the `core.logallrefupdates` config option.
+ enabled by default by the `core.logAllRefUpdates` config option.
The negated form `--no-create-reflog` only overrides an earlier
`--create-reflog`, but currently does not negate the setting of
- `core.logallrefupdates`.
+ `core.logAllRefUpdates`.
-f::
--force::
diff --git a/Documentation/git-cat-file.txt b/Documentation/git-cat-file.txt
index 204541c690..fb09cd69d6 100644
--- a/Documentation/git-cat-file.txt
+++ b/Documentation/git-cat-file.txt
@@ -192,7 +192,7 @@ newline. The available atoms are:
The 40-hex object name of the object.
`objecttype`::
- The type of of the object (the same as `cat-file -t` reports).
+ The type of the object (the same as `cat-file -t` reports).
`objectsize`::
The size, in bytes, of the object (the same as `cat-file -s`
diff --git a/Documentation/git-checkout.txt b/Documentation/git-checkout.txt
index d6399c0af8..e108b0f74b 100644
--- a/Documentation/git-checkout.txt
+++ b/Documentation/git-checkout.txt
@@ -13,7 +13,8 @@ SYNOPSIS
'git checkout' [-q] [-f] [-m] [--detach] <commit>
'git checkout' [-q] [-f] [-m] [[-b|-B|--orphan] <new_branch>] [<start_point>]
'git checkout' [-f|--ours|--theirs|-m|--conflict=<style>] [<tree-ish>] [--] <paths>...
-'git checkout' [-p|--patch] [<tree-ish>] [--] [<paths>...]
+'git checkout' [<tree-ish>] [--] <pathspec>...
+'git checkout' (-p|--patch) [<tree-ish>] [--] [<paths>...]
DESCRIPTION
-----------
@@ -38,7 +39,7 @@ $ git checkout -b <branch> --track <remote>/<branch>
------------
+
You could omit <branch>, in which case the command degenerates to
-"check out the current branch", which is a glorified no-op with a
+"check out the current branch", which is a glorified no-op with
rather expensive side-effects to show only the tracking information,
if exists, for the current branch.
@@ -78,20 +79,13 @@ be used to detach HEAD at the tip of the branch (`git checkout
+
Omitting <branch> detaches HEAD at the tip of the current branch.
-'git checkout' [-p|--patch] [<tree-ish>] [--] <pathspec>...::
+'git checkout' [<tree-ish>] [--] <pathspec>...::
- When <paths> or `--patch` are given, 'git checkout' does *not*
- switch branches. It updates the named paths in the working tree
- from the index file or from a named <tree-ish> (most often a
- commit). In this case, the `-b` and `--track` options are
- meaningless and giving either of them results in an error. The
- <tree-ish> argument can be used to specify a specific tree-ish
- (i.e. commit, tag or tree) to update the index for the given
- paths before updating the working tree.
-+
-'git checkout' with <paths> or `--patch` is used to restore modified or
-deleted paths to their original contents from the index or replace paths
-with the contents from a named <tree-ish> (most often a commit-ish).
+ Overwrite paths in the working tree by replacing with the
+ contents in the index or in the <tree-ish> (most often a
+ commit). When a <tree-ish> is given, the paths that
+ match the <pathspec> are updated both in the index and in
+ the working tree.
+
The index may contain unmerged entries because of a previous failed merge.
By default, if you try to check out such an entry from the index, the
@@ -101,6 +95,14 @@ specific side of the merge can be checked out of the index by
using `--ours` or `--theirs`. With `-m`, changes made to the working tree
file can be discarded to re-create the original conflicted merge result.
+'git checkout' (-p|--patch) [<tree-ish>] [--] [<pathspec>...]::
+ This is similar to the "check out paths to the working tree
+ from either the index or from a tree-ish" mode described
+ above, but lets you use the interactive interface to show
+ the "diff" output and choose which hunks to use in the
+ result. See below for the description of `--patch` option.
+
+
OPTIONS
-------
-q::
diff --git a/Documentation/git-for-each-ref.txt b/Documentation/git-for-each-ref.txt
index bb370c9c7b..cbd0a6212a 100644
--- a/Documentation/git-for-each-ref.txt
+++ b/Documentation/git-for-each-ref.txt
@@ -10,8 +10,9 @@ SYNOPSIS
[verse]
'git for-each-ref' [--count=<count>] [--shell|--perl|--python|--tcl]
[(--sort=<key>)...] [--format=<format>] [<pattern>...]
- [--points-at <object>] [(--merged | --no-merged) [<object>]]
- [--contains [<object>]] [--no-contains [<object>]]
+ [--points-at=<object>]
+ (--merged[=<object>] | --no-merged[=<object>])
+ [--contains[=<object>]] [--no-contains[=<object>]]
DESCRIPTION
-----------
@@ -25,19 +26,25 @@ host language allowing their direct evaluation in that language.
OPTIONS
-------
-<count>::
+<pattern>...::
+ If one or more patterns are given, only refs are shown that
+ match against at least one pattern, either using fnmatch(3) or
+ literally, in the latter case matching completely or from the
+ beginning up to a slash.
+
+--count=<count>::
By default the command shows all refs that match
`<pattern>`. This option makes it stop after showing
that many refs.
-<key>::
+--sort=<key>::
A field name to sort on. Prefix `-` to sort in
descending order of the value. When unspecified,
`refname` is used. You may use the --sort=<key> option
multiple times, in which case the last key becomes the primary
key.
-<format>::
+--format=<format>::
A string that interpolates `%(fieldname)` from a ref being shown
and the object it points at. If `fieldname`
is prefixed with an asterisk (`*`) and the ref points
@@ -50,11 +57,10 @@ OPTIONS
`xx`; for example `%00` interpolates to `\0` (NUL),
`%09` to `\t` (TAB) and `%0a` to `\n` (LF).
-<pattern>...::
- If one or more patterns are given, only refs are shown that
- match against at least one pattern, either using fnmatch(3) or
- literally, in the latter case matching completely or from the
- beginning up to a slash.
+--color[=<when>]:
+ Respect any colors specified in the `--format` option. The
+ `<when>` field must be one of `always`, `never`, or `auto` (if
+ `<when>` is absent, behave as if `always` was given).
--shell::
--perl::
@@ -65,24 +71,24 @@ OPTIONS
the specified host language. This is meant to produce
a scriptlet that can directly be `eval`ed.
---points-at <object>::
+--points-at=<object>::
Only list refs which points at the given object.
---merged [<object>]::
+--merged[=<object>]::
Only list refs whose tips are reachable from the
specified commit (HEAD if not specified),
incompatible with `--no-merged`.
---no-merged [<object>]::
+--no-merged[=<object>]::
Only list refs whose tips are not reachable from the
specified commit (HEAD if not specified),
incompatible with `--merged`.
---contains [<object>]::
+--contains[=<object>]::
Only list refs which contain the specified commit (HEAD if not
specified).
---no-contains [<object>]::
+--no-contains[=<object>]::
Only list refs which don't contain the specified commit (HEAD
if not specified).
diff --git a/Documentation/git-grep.txt b/Documentation/git-grep.txt
index 5033483db4..5edb1da46f 100644
--- a/Documentation/git-grep.txt
+++ b/Documentation/git-grep.txt
@@ -296,6 +296,9 @@ providing this option will cause it to die.
<pathspec>...::
If given, limit the search to paths matching at least one pattern.
Both leading paths match and glob(7) patterns are supported.
++
+For more details about the <pathspec> syntax, see the 'pathspec' entry
+in linkgit:gitglossary[7].
Examples
--------
@@ -312,6 +315,9 @@ Examples
Looks for a line that has `NODE` or `Unexpected` in
files that have lines that match both.
+`git grep solution -- :^Documentation`::
+ Looks for `solution`, excluding files in `Documentation`.
+
GIT
---
Part of the linkgit:git[1] suite
diff --git a/Documentation/git-notes.txt b/Documentation/git-notes.txt
index be7db3048d..43677297f3 100644
--- a/Documentation/git-notes.txt
+++ b/Documentation/git-notes.txt
@@ -171,7 +171,7 @@ OPTIONS
object that does not have notes attached to it.
--stdin::
- Also read the object names to remove notes from from the standard
+ Also read the object names to remove notes from the standard
input (there is no reason you cannot combine this with object
names from the command line).
diff --git a/Documentation/git-read-tree.txt b/Documentation/git-read-tree.txt
index 02576d8c0a..72bd809fb8 100644
--- a/Documentation/git-read-tree.txt
+++ b/Documentation/git-read-tree.txt
@@ -179,6 +179,7 @@ Here are the "carry forward" rules, where "I" denotes the index,
"clean" means that index and work tree coincide, and "exists"/"nothing"
refer to the presence of a path in the specified commit:
+....
I H M Result
-------------------------------------------------------
0 nothing nothing nothing (does not happen)
@@ -217,6 +218,7 @@ refer to the presence of a path in the specified commit:
19 no no yes exists exists keep index
20 yes yes no exists exists use M
21 no yes no exists exists fail
+....
In all "keep index" cases, the index entry stays as in the
original index file. If the entry is not up to date,
diff --git a/Documentation/git-shell.txt b/Documentation/git-shell.txt
index 2e30a3e42d..54cf2560be 100644
--- a/Documentation/git-shell.txt
+++ b/Documentation/git-shell.txt
@@ -79,6 +79,22 @@ EOF
$ chmod +x $HOME/git-shell-commands/no-interactive-login
----------------
+To enable git-cvsserver access (which should generally have the
+`no-interactive-login` example above as a prerequisite, as creating
+the git-shell-commands directory allows interactive logins):
+
+----------------
+$ cat >$HOME/git-shell-commands/cvs <<\EOF
+if ! test $# = 1 && test "$1" = "server"
+then
+ echo >&2 "git-cvsserver only handles \"server\""
+ exit 1
+fi
+exec git cvsserver server
+EOF
+$ chmod +x $HOME/git-shell-commands/cvs
+----------------
+
SEE ALSO
--------
ssh(1),
diff --git a/Documentation/git-status.txt b/Documentation/git-status.txt
index d47f198f15..9f3a78a36c 100644
--- a/Documentation/git-status.txt
+++ b/Documentation/git-status.txt
@@ -111,6 +111,8 @@ configuration variable documented in linkgit:git-config[1].
without options are equivalent to 'always' and 'never'
respectively.
+<pathspec>...::
+ See the 'pathspec' entry in linkgit:gitglossary[7].
OUTPUT
------
diff --git a/Documentation/git-tag.txt b/Documentation/git-tag.txt
index 543fb425ee..956fc019f9 100644
--- a/Documentation/git-tag.txt
+++ b/Documentation/git-tag.txt
@@ -115,6 +115,11 @@ options for details.
variable if it exists, or lexicographic order otherwise. See
linkgit:git-config[1].
+--color[=<when>]:
+ Respect any colors specified in the `--format` option. The
+ `<when>` field must be one of `always`, `never`, or `auto` (if
+ `<when>` is absent, behave as if `always` was given).
+
-i::
--ignore-case::
Sorting and filtering tags are case insensitive.
@@ -174,7 +179,7 @@ This option is only applicable when listing tags without annotation lines.
`core.logAllRefUpdates` in linkgit:git-config[1].
The negated form `--no-create-reflog` only overrides an earlier
`--create-reflog`, but currently does not negate the setting of
- `core.logallrefupdates`.
+ `core.logAllRefUpdates`.
<tagname>::
The name of the tag to create, delete, or describe.
diff --git a/Documentation/git-update-index.txt b/Documentation/git-update-index.txt
index 1579abf3c3..a14e6aebd9 100644
--- a/Documentation/git-update-index.txt
+++ b/Documentation/git-update-index.txt
@@ -153,7 +153,7 @@ you will need to handle the situation manually.
+
Version 4 performs a simple pathname compression that reduces index
size by 30%-50% on large repositories, which results in faster load
-time. Version 4 is relatively young (first released in in 1.8.0 in
+time. Version 4 is relatively young (first released in 1.8.0 in
October 2012). Other Git implementations such as JGit and libgit2
may not support it yet.
diff --git a/Documentation/git.txt b/Documentation/git.txt
index 6e3a6767e5..98b9b46b9e 100644
--- a/Documentation/git.txt
+++ b/Documentation/git.txt
@@ -75,7 +75,7 @@ example the following invocations are equivalent:
Note that omitting the `=` in `git -c foo.bar ...` is allowed and sets
`foo.bar` to the boolean true value (just like `[foo]bar` would in a
config file). Including the equals but with an empty value (like `git -c
-foo.bar= ...`) sets `foo.bar` to the empty string which ` git config
+foo.bar= ...`) sets `foo.bar` to the empty string which `git config
--bool` will convert to `false`.
--exec-path[=<path>]::
diff --git a/Documentation/gitattributes.txt b/Documentation/gitattributes.txt
index c4f2be2542..4c68bc19d5 100644
--- a/Documentation/gitattributes.txt
+++ b/Documentation/gitattributes.txt
@@ -151,7 +151,10 @@ unspecified.
This attribute sets a specific line-ending style to be used in the
working directory. It enables end-of-line conversion without any
-content checks, effectively setting the `text` attribute.
+content checks, effectively setting the `text` attribute. Note that
+setting this attribute on paths which are in the index with CRLF line
+endings may make the paths to be considered dirty. Adding the path to
+the index again will normalize the line endings in the index.
Set to string value "crlf"::
diff --git a/Documentation/glossary-content.txt b/Documentation/glossary-content.txt
index b71b943b12..6b8888d123 100644
--- a/Documentation/glossary-content.txt
+++ b/Documentation/glossary-content.txt
@@ -407,7 +407,7 @@ these forms:
exclude;;
After a path matches any non-exclude pathspec, it will be run
- through all exclude pathspec (magic signature: `!` or its
+ through all exclude pathspecs (magic signature: `!` or its
synonym `^`). If it matches, the path is ignored. When there
is no non-exclude pathspec, the exclusion is applied to the
result set as if invoked without any pathspec.
diff --git a/Documentation/merge-strategies.txt b/Documentation/merge-strategies.txt
index 2eb92b9327..a09d597463 100644
--- a/Documentation/merge-strategies.txt
+++ b/Documentation/merge-strategies.txt
@@ -39,7 +39,8 @@ even look at what the other tree contains at all. It discards everything
the other tree did, declaring 'our' history contains all that happened in it.
theirs;;
- This is the opposite of 'ours'.
+ This is the opposite of 'ours'; note that, unlike 'ours', there is
+ no 'theirs' merge stragegy to confuse this merge option with.
patience;;
With this option, 'merge-recursive' spends a little extra time
diff --git a/Documentation/pull-fetch-param.txt b/Documentation/pull-fetch-param.txt
index 1ebbf1d738..c579793af5 100644
--- a/Documentation/pull-fetch-param.txt
+++ b/Documentation/pull-fetch-param.txt
@@ -23,9 +23,11 @@ ifdef::git-pull[]
endif::git-pull[]
+
The format of a <refspec> parameter is an optional plus
-`+`, followed by the source ref <src>, followed
+`+`, followed by the source <src>, followed
by a colon `:`, followed by the destination ref <dst>.
-The colon can be omitted when <dst> is empty.
+The colon can be omitted when <dst> is empty. <src> is
+typically a ref, but it can also be a fully spelled hex object
+name.
+
`tag <tag>` means the same as `refs/tags/<tag>:refs/tags/<tag>`;
it requests fetching everything up to the given tag.