merge(third_party/git): Merge squashed git subtree at v2.23.0

Merge commit '1b593e1ea4' as 'third_party/git'

third_party/git/Documentation/git-verify-pack.txt

@@ -0,0 +1,53 @@
+git-verify-pack(1)
+==================
+
+NAME
+----
+git-verify-pack - Validate packed Git archive files
+
+
+SYNOPSIS
+--------
+[verse]
+'git verify-pack' [-v|--verbose] [-s|--stat-only] [--] <pack>.idx ...
+
+
+DESCRIPTION
+-----------
+Reads given idx file for packed Git archive created with the
+'git pack-objects' command and verifies idx file and the
+corresponding pack file.
+
+OPTIONS
+-------
+<pack>.idx ...::
+	The idx files to verify.
+
+-v::
+--verbose::
+	After verifying the pack, show list of objects contained
+	in the pack and a histogram of delta chain length.
+
+-s::
+--stat-only::
+	Do not verify the pack contents; only show the histogram of delta
+	chain length.  With `--verbose`, list of objects is also shown.
+
+\--::
+	Do not interpret any more arguments as options.
+
+OUTPUT FORMAT
+-------------
+When specifying the -v option the format used is:
+
+	SHA-1 type size size-in-packfile offset-in-packfile
+
+for objects that are not deltified in the pack, and
+
+	SHA-1 type size size-in-packfile offset-in-packfile depth base-SHA-1
+
+for objects that are deltified.
+
+GIT
+---
+Part of the linkgit:git[1] suite