~/win32-6.2
$ git bisect bad
8dfbb8809f5784aff9224adcbf0267930cd5e46f is the first bad commit
commit 8dfbb8809f5784aff9224adcbf0267930cd5e46f
Author: Norbert Thiebaud <nthiebaud@gmail.com>
Date:   Sat Mar 9 17:29:08 2019 -0800

    source sha:f8c00f23660e6816dd0a15708702c986c0cb4062

    source sha:f8c00f23660e6816dd0a15708702c986c0cb4062

:040000 040000 3a7f67f4f52232f09bfa5833b2c7cd02581debc3 7a40c8de33631e05466cd8ef1548b70b7b8f2bc4 M      instdir

 ~/win32-6.2
$ git bisect log
# bad: [32300ab0da959bbff1f09736ff655937319e7e3e] source sha:5f01fe15eb2661f1f9ce12d1d99dc2a705b462ee
# good: [b0a56ec98b1368cb5e3e531e0b3f69565af91609] source sha:3a801799536e6870f2fb111b1cc00b9575a35a39
git bisect start 'origin/master' 'oldest'
# good: [696d8ce3656c1a7018e3647f381d01de8432cb19] source sha:43125f3b0b18b8d9bac9bd459fa234cb5ff9ddb4
git bisect good 696d8ce3656c1a7018e3647f381d01de8432cb19
# good: [696d8ce3656c1a7018e3647f381d01de8432cb19] source sha:43125f3b0b18b8d9bac9bd459fa234cb5ff9ddb4
git bisect good 696d8ce3656c1a7018e3647f381d01de8432cb19
# good: [313291982701f81331b6569203682bbb5da03ad9] source sha:922f935f9ddefcfc50d0bbf805c97ea3f9d5c5e6
git bisect good 313291982701f81331b6569203682bbb5da03ad9
# good: [fa54824924d41aef8e5032a08cefde0a4c1d478b] source sha:d3e4c06ccb3aa4bb9078077a49dc2b2795835a5c
git bisect good fa54824924d41aef8e5032a08cefde0a4c1d478b
# bad: [44048d34ce2f1f0d44aa4fae4d3a443e79cb4dfd] source sha:b2bb05fc4fddbdcb191f993ba58adab08adbc99b
git bisect bad 44048d34ce2f1f0d44aa4fae4d3a443e79cb4dfd
# good: [9d28c901479c528e6d642cae1c19b18d324981e4] source sha:39d6804454f60fb9ba442f85a0487898dfe68e69
git bisect good 9d28c901479c528e6d642cae1c19b18d324981e4
# good: [71db184d42b7939ccb53d81fd40118f96c60c635] source sha:227f96375277b8eff784d41e38e9222f366bf288
git bisect good 71db184d42b7939ccb53d81fd40118f96c60c635
# good: [34dd4f93ed10c238f14f3d740c07ff370ecf0658] source sha:e14015edd9fb090bf7444f850dff42c84321bb35
git bisect good 34dd4f93ed10c238f14f3d740c07ff370ecf0658
# good: [5cb634f1be6f26befbf021eb7d32bf82a0a0a1ec] source sha:36f027769ea6aaabb5e993a321d7a56775d4bee1
git bisect good 5cb634f1be6f26befbf021eb7d32bf82a0a0a1ec
# bad: [4cfe710d364c582c371bac701092a52330d87c13] source sha:62af6c4f28ef1346170c81557a1845616be33336
git bisect bad 4cfe710d364c582c371bac701092a52330d87c13
# good: [f41aa7ee0fbc433a2b8fd85e0e74c80e88451424] source sha:143823fc511bf86b5f4d7f39c498929597abb68f
git bisect good f41aa7ee0fbc433a2b8fd85e0e74c80e88451424
# good: [5d50aca785f262f5e65413732684381b44804010] source sha:690e525970ad50be119182e5dab965363e8cc76a
git bisect good 5d50aca785f262f5e65413732684381b44804010
# good: [5180ad6a209328004185b7ad1f3087e789f3177e] source sha:c1a0cd9f3272f484a15ab2d6c1d9fe727a2b27f1
git bisect good 5180ad6a209328004185b7ad1f3087e789f3177e
# bad: [c403f421d127c8ad7a2bfed5de829b06bd34a3c3] source sha:214e6ed5286566e689a4ef13a9115e2ad38fff57
git bisect bad c403f421d127c8ad7a2bfed5de829b06bd34a3c3
# bad: [8dfbb8809f5784aff9224adcbf0267930cd5e46f] source sha:f8c00f23660e6816dd0a15708702c986c0cb4062
git bisect bad 8dfbb8809f5784aff9224adcbf0267930cd5e46f
# first bad commit: [8dfbb8809f5784aff9224adcbf0267930cd5e46f] source sha:f8c00f23660e6816dd0a15708702c986c0cb4062