LUCENE-8106: add cmdline option --no-git to avoid all git usage; replaces --no-fetch cmdline option

dev-tools/scripts/reproduceJenkinsFailures.py

@@ -63,8 +63,8 @@ def readConfig():
                                    description=description)
   parser.add_argument('url', metavar='URL',
                       help='Points to the Jenkins log to parse')
-  parser.add_argument('--no-fetch', dest='fetch', action='store_false', default=True,
-                      help='Do not run "git fetch" prior to "git checkout"')
+  parser.add_argument('--no-git', dest='useGit', action='store_false', default=True,
+                      help='Do not run "git" at all')
   parser.add_argument('--iters', dest='testIters', type=int, default=defaultIters, metavar='N',
                       help='Number of iterations per test suite (default: %d)' % defaultIters)
   return parser.parse_args()
@@ -123,9 +123,9 @@ def fetchAndParseJenkinsLog(url):
     sys.exit(0)
   return tests
 
-def prepareWorkspace(fetch, gitRef):
+def prepareWorkspace(useGit, gitRef):
   global gitCheckoutSucceeded
-  if fetch:
+  if useGit:
     code = run('git fetch')
     if 0 != code:
       raise RuntimeError('ERROR: "git fetch" failed.  See above.')
@@ -135,6 +135,7 @@ def prepareWorkspace(fetch, gitRef):
       raise RuntimeError('ERROR: "%s" failed.  See above.' % checkoutCmd)
     gitCheckoutSucceeded = True
     run('git merge --ff-only', rememberFailure=False) # Ignore failure on non-branch ref
+  
   code = run('ant clean')
   if 0 != code:
     raise RuntimeError('ERROR: "ant clean" failed.  See above.')
@@ -207,14 +208,16 @@ def getLocalGitBranch():
 def main():
   config = readConfig()
   tests = fetchAndParseJenkinsLog(config.url)
+  if config.useGit:
     localGitBranch = getLocalGitBranch()
 
   try:
-    prepareWorkspace(config.fetch, revisionFromLog)
+    prepareWorkspace(config.useGit, revisionFromLog)
     modules = groupTestsByModule(tests)
     runTests(config.testIters, modules, tests)
     failures = printReport(config.testIters, '')
     
+    if config.useGit:
       # Retest 100% failures at the tip of the branch
       oldTests = tests
       tests = {}
@@ -246,7 +249,7 @@ def main():
     print('[repro] %s' % traceback.format_exc())
     sys.exit(1)
   finally:
-    if gitCheckoutSucceeded:
+    if config.useGit and gitCheckoutSucceeded:
       run('git checkout %s' % localGitBranch, rememberFailure=False) # Restore original git branch/sha
 
   print('[repro] Exiting with code %d' % lastFailureCode)