Across all Windows bots:

https://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_rel_ng/builds/418258
https://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_compile_dbg_ng/builds/403076
https://build.chromium.org/p/tryserver.chromium.win/builders/win_optional_gpu_tests_rel/builds/9837
https://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_ng/builds/435772

[P976 17:26:42.446 client.go:879 I] cipd: updating client to infra/tools/cipd/windows-386:1074919e2e48944fdc4867651057b97a4b688605 (git_revision:76eadcd75c5ad2638e1fc098f81748aad150c7c0)
[P3528 17:26:42.633 client.go:1296 D] Everything is up-to-date.
INFO:root:running 'c:\\users\\chrome~2\\appdata\\local\\temp\\tmpxbpurl\\git-installer.exe -y -InstallPath="E:\\\\b\\\\rr\\\\tmpyqinsq\\\\rw\\\\checkout\\\\scripts\\\\slave\\\\.recipe_deps\\\\depot_tools\\\\git-2.10.0-64_bin" -Directory="E:\\\\b\\\\rr\\\\tmpyqinsq\\\\rw\\\\checkout\\\\scripts\\\\slave\\\\.recipe_deps\\\\depot_tools\\\\git-2.10.0-64_bin"'
Traceback (most recent call last):
  File "E:\b\rr\tmpyqinsq\rw\checkout\scripts\slave\.recipe_deps\depot_tools\bootstrap\win\git_bootstrap.py", line 178, in <module>
    sys.exit(main(sys.argv[1:]))
  File "E:\b\rr\tmpyqinsq\rw\checkout\scripts\slave\.recipe_deps\depot_tools\bootstrap\win\git_bootstrap.py", line 167, in main
    install_git(args, bits, git_version, git_directory)
  File "E:\b\rr\tmpyqinsq\rw\checkout\scripts\slave\.recipe_deps\depot_tools\bootstrap\win\git_bootstrap.py", line 110, in install_git
    '-Directory="%s"' % git_directory.replace('\\', '\\\\'),
  File "E:\b\rr\tmpyqinsq\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