merge(3p/git): Merge git subtree at v2.29.2 r/1890

This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb

1 files changed, 14 insertions, 14 deletions

diff --git a/third_party/git/Documentation/technical/commit-graph.txt b/third_party/git/Documentation/technical/commit-graph.txt
index 729fbcb32f..f14a7659aa 100644
--- a/third_party/git/Documentation/technical/commit-graph.txt
+++ b/third_party/git/Documentation/technical/commit-graph.txt
@@ -22,11 +22,11 @@ as "commit-graph" either in the .git/objects/info directory or in the info
 directory of an alternate.
 
 The commit-graph file stores the commit graph structure along with some
-extra metadata to speed up graph walks. By listing commit OIDs in lexi-
-cographic order, we can identify an integer position for each commit and
-refer to the parents of a commit using those integer positions. We use
-binary search to find initial commits and then use the integer positions
-for fast lookups during the walk.
+extra metadata to speed up graph walks. By listing commit OIDs in
+lexicographic order, we can identify an integer position for each commit
+and refer to the parents of a commit using those integer positions. We
+use binary search to find initial commits and then use the integer
+positions for fast lookups during the walk.
 
 A consumer may load the following info for a commit from the graph:
 
@@ -85,7 +85,7 @@ have generation number represented by the macro GENERATION_NUMBER_ZERO = 0.
 Since the commit-graph file is closed under reachability, we can guarantee
 the following weaker condition on all commits:
 
-    If A and B are commits with generation numbers N amd M, respectively,
+    If A and B are commits with generation numbers N and M, respectively,
     and N < M, then A cannot reach B.
 
 Note how the strict inequality differs from the inequality when we have
@@ -210,12 +210,12 @@ file.
 			    +---------------------+
 			    |                     |
  +-----------------------+  +---------------------+
- |  graph-{hash2} |->|                     |
+ |  graph-{hash2}        |->|                     |
  +-----------------------+  +---------------------+
 	  |                 |                     |
  +-----------------------+  +---------------------+
  |                       |  |                     |
- |  graph-{hash1} |->|                     |
+ |  graph-{hash1}        |->|                     |
  |                       |  |                     |
  +-----------------------+  +---------------------+
 	  |                  tmp_graphXXX
@@ -223,7 +223,7 @@ file.
  |                       |
  |                       |
  |                       |
- |  graph-{hash0} |
+ |  graph-{hash0}        |
  |                       |
  |                       |
  |                       |
@@ -323,14 +323,14 @@ Related Links
 [0] https://bugs.chromium.org/p/git/issues/detail?id=8
     Chromium work item for: Serialized Commit Graph
 
-[1] https://public-inbox.org/git/20110713070517.GC18566@sigill.intra.peff.net/
+[1] https://lore.kernel.org/git/20110713070517.GC18566@sigill.intra.peff.net/
     An abandoned patch that introduced generation numbers.
 
-[2] https://public-inbox.org/git/20170908033403.q7e6dj7benasrjes@sigill.intra.peff.net/
+[2] https://lore.kernel.org/git/20170908033403.q7e6dj7benasrjes@sigill.intra.peff.net/
     Discussion about generation numbers on commits and how they interact
     with fsck.
 
-[3] https://public-inbox.org/git/20170908034739.4op3w4f2ma5s65ku@sigill.intra.peff.net/
+[3] https://lore.kernel.org/git/20170908034739.4op3w4f2ma5s65ku@sigill.intra.peff.net/
     More discussion about generation numbers and not storing them inside
     commit objects. A valuable quote:
 
@@ -342,9 +342,9 @@ Related Links
      commit objects (i.e., packv4 or something like the "metapacks" I
      proposed a few years ago)."
 
-[4] https://public-inbox.org/git/20180108154822.54829-1-git@jeffhostetler.com/T/#u
+[4] https://lore.kernel.org/git/20180108154822.54829-1-git@jeffhostetler.com/T/#u
     A patch to remove the ahead-behind calculation from 'status'.
 
-[5] https://public-inbox.org/git/f27db281-abad-5043-6d71-cbb083b1c877@gmail.com/
+[5] https://lore.kernel.org/git/f27db281-abad-5043-6d71-cbb083b1c877@gmail.com/
     A discussion of a "two-dimensional graph position" that can allow reading
     multiple commit-graph chains at the same time.