See for example:
https://luci-milo.appspot.com/buildbot/tryserver.chromium.win/win_clang/223683

https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Ftryserver.chromium.win%2Fwin_clang%2F223683%2F%2B%2Frecipes%2Fsteps%2Fensure_git_tooling_on_windows%2F0%2Fstdout

LogDog : chromium/bb/tryserver.chromium.win/win_clang/223683/+/recipes/steps/ensure_git_tooling_on_windows/0/stdout

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WRAP
'E:\b\depot_tools\python276_bin\python.exe' -u 'E:\b\rr\tmpiaupkt\rw\checkout\scripts\slave\.recipe_deps\depot_tools\bootstrap\win\git_bootstrap.py' --verbose
in dir E:\b\rr\tmpiaupkt\rw\checkout\scripts\slave\.recipe_deps\depot_tools\:
 allow_subannotations: False
 base_name: ensure git tooling on windows
 cmd: ['E:\\b\\depot_tools\\python276_bin\\python.exe', '-u', 'E:\\b\\rr\\tmpiaupkt\\rw\\checkout\\scripts\\slave\\.recipe_deps\\depot_tools\\bootstrap\\win\\git_bootstrap.py', '--verbose']
 cwd: E:\b\rr\tmpiaupkt\rw\checkout\scripts\slave\.recipe_deps\depot_tools\
 infra_step: True
 name: ensure git tooling on windows
 nest_level: 0
 ok_ret: frozenset([0])
 timeout: 300
 trigger_specs: []
full environment:
 APPDATA: C:\Users\chrome-bot\AppData\Roaming
 AWS_CREDENTIAL_FILE: E:\b\build\site_config\.boto
 BOTO_CONFIG: E:\b\build\site_config\.boto
 BUILDBOT_BLAMELIST: [u'sunnyps@chromium.org']
 BUILDBOT_BRANCH: 
 BUILDBOT_BUILDBOTURL: http://build.chromium.org/p/tryserver.chromium.win/
 BUILDBOT_BUILDERNAME: win_clang
 BUILDBOT_BUILDNUMBER: 223683
 BUILDBOT_CLOBBER: 
 BUILDBOT_GOT_REVISION: None
 BUILDBOT_MASTERNAME: tryserver.chromium.win
 BUILDBOT_REVISION: 
 BUILDBOT_SCHEDULER: None
 BUILDBOT_SLAVENAME: vm764-m4
 CHROME_HEADLESS: 1
 CIPD_CACHE_DIR: E:\b\c\cipd
 COMMONPROGRAMFILES: C:\Program Files (x86)\Common Files
 COMMONPROGRAMFILES(X86): C:\Program Files (x86)\Common Files
 COMMONPROGRAMW6432: C:\Program Files\Common Files
 COMPUTERNAME: VM764-M4
 COMSPEC: C:\Windows\system32\cmd.exe
 GIT_USER_AGENT: git/2.10.0.windows.1 win32 VM764-M4.golo.chromium.org
 HOME: c:\Users\chrome-bot
 HOMEDRIVE: C:
 HOMEPATH: \Users\chrome-bot
 INFRA_BUILDBOT_MASTER_CLASS_NAME: TryServerChromiumWin
 INFRA_BUILDBOT_SLAVE_ACTIVE_SUBDIR: 
 INFRA_BUILDBOT_SLAVE_NAME: vm764-m4
 LOCALAPPDATA: C:\Users\chrome-bot\AppData\Local
 LOGDOG_COORDINATOR_HOST: luci-logdog.appspot.com
 LOGDOG_STREAM_PREFIX: bb/tryserver.chromium.win/win_clang/223683
 LOGDOG_STREAM_PROJECT: chromium
 LOGDOG_STREAM_SERVER_PATH: net.pipe:LUCILogDogButler
 LOGNAME: chrome-bot
 NUMBER_OF_PROCESSORS: 8
 OS: Windows_NT
 PATH: E:\b\cipd_path_tools;E:\b\cipd_client;E:\b\depot_tools\python276_bin;E:\b\depot_tools\python276_bin\Scripts;E:\b\depot_tools;E:\b\depot_tools\python276_bin;C:\Windows\system32;C:\Windows\system32\WBEM;C:\Program Files\7-Zip;C:\cmake\bin;c:\windows\system32\windowspowershell\v1.0;E:\b\build_internal\tools
 PATHEXT: .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
 PROCESSOR_ARCHITECTURE: x86
 PROCESSOR_ARCHITEW6432: AMD64
 PROCESSOR_IDENTIFIER: Intel64 Family 6 Model 45 Stepping 7, GenuineIntel
 PROGRAMFILES: C:\Program Files (x86)
 PROGRAMFILES(X86): C:\Program Files (x86)
 PROGRAMW6432: C:\Program Files
 PROMPT: $P$G
 PWD: E:\b\build\slave\remote_run\build
 PYTHONIOENCODING: UTF-8
 PYTHONPATH: E:\b\build\site_config;E:\b\build\scripts;E:\b\build\scripts\release;E:\b\build\third_party;E:\b\build\third_party\google_api_python_client;E:\b\build\third_party\httplib2\python2;E:\b\build\third_party\infra_libs;E:\b\build\third_party\oauth2client;E:\b\build\third_party\pyasn1;E:\b\build\third_party\pyasn1-modules;E:\b\build\third_party\python-rsa;E:\b\build\third_party\requests_2_10_0;E:\b\build\third_party\setuptools-0.6c11;E:\b\build\third_party\site-packages;E:\b\build\third_party\uritemplate;E:\b\build_internal\site_config;E:\b\build_internal\symsrc;E:\b\build\slave;E:\b\build\third_party\buildbot_slave_8_4;E:\b\build\third_party\twisted_10_2;
 PYTHONUNBUFFERED: 1
 SYSTEMDRIVE: C:
 SYSTEMROOT: C:\Windows
 TEMP: C:\Users\CHROME~2\AppData\Local\Temp
 TMP: C:\Users\CHROME~2\AppData\Local\Temp
 USERDOMAIN: GOLO
 USERNAME: chrome-bot
 USERPROFILE: C:\Users\chrome-bot
 VS110COMNTOOLS: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Tools\
 WINDIR: C:\Windows
INFO:root:running ['E:\\b\\rr\\tmpiaupkt\\rw\\checkout\\scripts\\slave\\.recipe_deps\\depot_tools\\cipd.bat', 'ensure', '-list', 'c:\\users\\chrome~2\\appdata\\local\\temp\\tmpuun9zp', '-root', 'c:\\users\\chrome~2\\appdata\\local\\temp\\tmpn7w31r', '-verbose']
Bootstrapping cipd client for windows-386...
From https://chrome-infra-packages.appspot.com/client?platform=windows-386&vers
ion=git_revision:76eadcd75c5ad2638e1fc098f81748aad150c7c0
Exception calling "DownloadFile" with "2" argument(s): "The operation has timed
 out"
At E:\b\rr\tmpiaupkt\rw\checkout\scripts\slave\.recipe_deps\depot_tools\cipd.ps
1:51 char:21
+     $wc.DownloadFile <<<< ($url, $client)
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : DotNetMethodException
 
The term 'E:\b\rr\tmpiaupkt\rw\checkout\scripts\slave\.recipe_deps\depot_tools\
.cipd_client.exe' is not recognized as the name of a cmdlet, function, script f
ile, or operable program. Check the spelling of the name, or if a path was incl
uded, verify that the path is correct and try again.
At E:\b\rr\tmpiaupkt\rw\checkout\scripts\slave\.recipe_deps\depot_tools\cipd.ps
1:54 char:7
+ $_ = & <<<<  $client selfupdate -version "$cipdClientVer"
    + CategoryInfo          : ObjectNotFound: (E:\b\rr\tmpiaup...cipd_client.e 
   xe:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
 
The term 'E:\b\rr\tmpiaupkt\rw\checkout\scripts\slave\.recipe_deps\depot_tools\
.cipd_client.exe' is not recognized as the name of a cmdlet, function, script f
ile, or operable program. Check the spelling of the name, or if a path was incl
uded, verify that the path is correct and try again.
At E:\b\rr\tmpiaupkt\rw\checkout\scripts\slave\.recipe_deps\depot_tools\cipd.ps
1:60 char:2
+ & <<<<  $client @args
    + CategoryInfo          : ObjectNotFound: (E:\b\rr\tmpiaup...cipd_client.e 
   xe:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
 
INFO:root:running 'c:\\users\\chrome~2\\appdata\\local\\temp\\tmpn7w31r\\git-installer.exe -y -InstallPath="E:\\\\b\\\\rr\\\\tmpiaupkt\\\\rw\\\\checkout\\\\scripts\\\\slave\\\\.recipe_deps\\\\depot_tools\\\\git-2.10.0-64_bin" -Directory="E:\\\\b\\\\rr\\\\tmpiaupkt\\\\rw\\\\checkout\\\\scripts\\\\slave\\\\.recipe_deps\\\\depot_tools\\\\git-2.10.0-64_bin"'
Traceback (most recent call last):
  File "E:\b\rr\tmpiaupkt\rw\checkout\scripts\slave\.recipe_deps\depot_tools\bootstrap\win\git_bootstrap.py", line 195, in <module>
    sys.exit(main(sys.argv[1:]))
  File "E:\b\rr\tmpiaupkt\rw\checkout\scripts\slave\.recipe_deps\depot_tools\bootstrap\win\git_bootstrap.py", line 184, in main
    install_git(args, git_version, git_directory)
  File "E:\b\rr\tmpiaupkt\rw\checkout\scripts\slave\.recipe_deps\depot_tools\bootstrap\win\git_bootstrap.py", line 121, in install_git
    '-Directory="%s"' % git_directory.replace('\\', '\\\\'),
  File "E:\b\rr\tmpiaupkt\rw\checkout\scripts\slave\.recipe_deps\depot_tools\bootstrap\win\git_bootstrap.py", line 27, in _check_call
    subprocess.check_call(argv, **kwargs)
  File "E:\b\depot_tools\python276_bin\lib\subprocess.py", line 535, in check_call
    retcode = call(*popenargs, **kwargs)
  File "E:\b\depot_tools\python276_bin\lib\subprocess.py", line 522, in call
    return Popen(*popenargs, **kwargs).wait()
  File "E:\b\depot_tools\python276_bin\lib\subprocess.py", line 709, in __init__
    errread, errwrite)
  File "E:\b\depot_tools\python276_bin\lib\subprocess.py", line 957, in _execute_child
    startupinfo)
WindowsError: [Error 2] The system cannot find the file specified
step returned non-zero exit code: 1