~/bibisect-win32-6.0
$ git bisect bad
6e98aaf28c164b2d42f69bd016443467ae6a6411 is the first bad commit
commit 6e98aaf28c164b2d42f69bd016443467ae6a6411
Author: Norbert Thiebaud <nthiebaud@gmail.com>
Date:   Wed Dec 27 06:49:24 2017 -0800

    source sha:203b913155812706e9be14c5fe2b8f543cc4fdc7

    source sha:203b913155812706e9be14c5fe2b8f543cc4fdc7

:040000 040000 d42ab7cafe9978b6e4ccf6baa33ea3ff2fd48990 1f946e2c5c7eb46fc23952a926a99ac1850a35dd M      instdir

~/bibisect-win32-6.0
$ git bisect log
# bad: [fd9eaf386eee8b032c49084eba0a3034d28382b7] source sha:47cc374c0659fd3db74a1b184c870eaa56bc385b
# good: [cc5c4c7ed1d8d01b0063bcaaeb5f6d59282c8029] source sha:9feb7f7039a3b59974cbf266922177e961a52dd1
git bisect start 'origin/master' 'oldest'
# good: [1c90be7178d31c0f4cb17ff9e7c44a6cb9a2b058] source sha:029f2fdc2a164ca5ab2ecb9e2d4b9cf5112083b4
git bisect good 1c90be7178d31c0f4cb17ff9e7c44a6cb9a2b058
# good: [bca41ffc9a82247b8f0e4a56775836a704bc419c] source sha:7bd70488cdfbd3ebca9e4151b9731a020e80db95
git bisect good bca41ffc9a82247b8f0e4a56775836a704bc419c
# good: [604026e8c7c638bf9678f47f7952b262e4a20dde] source sha:e4d1551697406bab0e9973bfa8ac012c48ff8eea
git bisect good 604026e8c7c638bf9678f47f7952b262e4a20dde
# good: [74c8623a91e5fbe83e96188cc66e61752807dd57] source sha:129852d379fa03c36886b5f48d6a10e530a9c3de
git bisect good 74c8623a91e5fbe83e96188cc66e61752807dd57
# good: [73ca15ec5bdd22499c70b18749a03241c71fb12e] source sha:c9f6e0da9d63aa18cf6a26e5b864dd9bb48fc514
git bisect good 73ca15ec5bdd22499c70b18749a03241c71fb12e
# good: [88cb2c47d54cd2233067c102f8a5b4089313eae6] source sha:4e34b003bc8908e0f9f78e8ed5e84e7a5e42a6ca
git bisect good 88cb2c47d54cd2233067c102f8a5b4089313eae6
# good: [c92dbf9089924e13157b183058370ceb3683ee7d] source sha:3aaa5ffed270ecea821c1ba4a5f18eefe9a89947
git bisect good c92dbf9089924e13157b183058370ceb3683ee7d
# good: [3d9ad4beb834367cb4aa7372109002139f0785b1] source sha:16d75204418455c0d9dff13607432dae33a7566e
git bisect good 3d9ad4beb834367cb4aa7372109002139f0785b1
# bad: [5abdb71455ab5ce752162dac9765d04abae535c6] source sha:248834d1c2e105a6bf8627c2635c50e758eeb337
git bisect bad 5abdb71455ab5ce752162dac9765d04abae535c6
# good: [dedf7430d5abae5af52d3fadcc0e5453c1ec9ccc] source sha:4ca94f24995c8d7b854e2d98fd7ff8fa7b9e2157
git bisect good dedf7430d5abae5af52d3fadcc0e5453c1ec9ccc
# good: [e75764cd44499052e7b4366c928910f93187cd82] source sha:023949fac0043408ac1b86dc67732666d041875e
git bisect good e75764cd44499052e7b4366c928910f93187cd82
# bad: [9c6ef048afc7e6e2cc8919a9fdbfefd4853296c2] source sha:3139c93b62e17982d05117f6fcca7d6fb2920ba4
git bisect bad 9c6ef048afc7e6e2cc8919a9fdbfefd4853296c2
# bad: [6e98aaf28c164b2d42f69bd016443467ae6a6411] source sha:203b913155812706e9be14c5fe2b8f543cc4fdc7
git bisect bad 6e98aaf28c164b2d42f69bd016443467ae6a6411
# first bad commit: [6e98aaf28c164b2d42f69bd016443467ae6a6411] source sha:203b913155812706e9be14c5fe2b8f543cc4fdc7