be4311c07e14feb728abc6425ee606ffaa611a58
markd
  Fri Jan 22 06:46:58 2021 -0800
merge with master

diff --git src/hg/htdocs/admin/git.html src/hg/htdocs/admin/git.html
index 5b6207d..9cdd9d0 100755
--- src/hg/htdocs/admin/git.html
+++ src/hg/htdocs/admin/git.html
@@ -1,42 +1,42 @@
 <!DOCTYPE html>
 <!--#set var="TITLE" value="Genome Browser Git Access" -->
 <!--#set var="ROOT" value=".." -->
 
 <!-- Relative paths to support mirror sites with non-standard GB docs install -->
 <!--#include virtual="$ROOT/inc/gbPageStart.html" -->
 
 <h1>Access Browser Code Using Git</h1> 
 <p> 
 <strong>Install Git:</strong><br> 
 Install Git software version 1.6.2.2 or later. See the Git Community Handbook 
-<a href="http://book.git-scm.com/2_installing_git.html" target="_blank">installation</a> and 
-<a href="http://book.git-scm.com/2_setup_and_initialization.html" target="_blank">setup</a> 
+<a href="http://book.git-scm.com/book/en/v2/Getting-Started-Installing-Git" target="_blank">installation</a> and 
+<a href="http://book.git-scm.com/book/en/v2/Getting-Started-First-Time-Git-Setup" target="_blank">setup</a> 
 instructions, as well as our <a href="http://genomewiki.ucsc.edu/index.php/Installing_git" 
 target="_blank">Installing git</a> Genomewiki page.</p> 
 <p> 
 <strong>Start an initial Git local repository:</strong></p> 
 <pre><code>$ git clone git://genome-source.soe.ucsc.edu/kent.git</code></pre>
 <p>Or, if a firewall prevents git daemon port 9418, use: 
 <pre><code>$ git clone http://genome-source.soe.ucsc.edu/kent.git</code></pre> 
 <p>
 The kent source tree will be imported to the current working directory in a directory named 
 ./kent/.</p> 
 <p> 
 <strong>Track the beta branch at UCSC repository:</strong><br> 
 Most users want to use the beta branch, which has tested, released versions of the browser. To 
-create a beta <a href="http://book.git-scm.com/4_tracking_branches.html" target="_blank">tracking 
+create a beta <a href="http://book.git-scm.com/book/en/v2/Git-Branching-Branches-in-a-Nutshell" target="_blank">tracking 
 branch</a>: 
 <pre><code>$ cd kent
 $ git checkout -t -b beta origin/beta</code></pre> 
 <p>
 The <em>-b</em> creates a local branch with the name &quot;beta&quot;, and checks it out.<br> 
 The <em>-t</em> makes it a tracking branch, so that &quot;git pull&quot; pulls in updates from 
 <em>origin/beta</em>, the &quot;real&quot; beta branch in our public central read-only 
 repository.</p> 
 <p> 
 <strong>To get the latest UCSC release:</strong><br> 
 Type this command From anywhere within the kent source tree:</p> 
 <pre><code>$ git pull</code></pre> 
 <p> 
 <strong>To view the source via gitlist:</strong><br> 
 Browse to <a href="http://genome-source.soe.ucsc.edu/gitlist/"