~/bibisect-win32-6.2
$ git bisect good
2f1b5be78ebfe5f4cebe2c4048c6647078ae6500 is the first bad commit
commit 2f1b5be78ebfe5f4cebe2c4048c6647078ae6500
Author: Norbert Thiebaud <nthiebaud@gmail.com>
Date:   Mon Sep 3 00:24:20 2018 -0700

    source sha:aeff83240c88435d11590f5e9c6fe9927a508c6a

    source sha:aeff83240c88435d11590f5e9c6fe9927a508c6a

:040000 040000 545ebf3a57a6d30322613713e0e66c3dbde81be2 db32779c044d02395ed097c70397c767ee23938f M      instdir

 ~/bibisect-win32-6.2
$ git bisect log
# bad: [325059128158950793c1804afac1e715abd0de27] source sha:fc5ab21dd326c28486e9cb668c50f417ab4455ee
# good: [b0a56ec98b1368cb5e3e531e0b3f69565af91609] source sha:3a801799536e6870f2fb111b1cc00b9575a35a39
git bisect start 'origin/master' 'oldest'
# good: [f7886844a64c0da6a68168e5e1fa31649c92c354] source sha:99503fa006497a88e4dc413a3f85af19d720874c
git bisect good f7886844a64c0da6a68168e5e1fa31649c92c354
# good: [4f4bc891a52dbac43a0ff7025fb88d8689eb5675] source sha:f31d261d8721a2eecbd9cf0d58f26f2b69092e30
git bisect good 4f4bc891a52dbac43a0ff7025fb88d8689eb5675
# good: [fdc1f44c7b9a6b7a0f0b9d370453c7d90349f872] source sha:7d44fb6d97f629839bb896142ccb4ce0c55db707
git bisect good fdc1f44c7b9a6b7a0f0b9d370453c7d90349f872
# good: [35bc9c8f29a411c635a6d3094b37bec314e15b24] source sha:98177cd488f3114ed561fd259b3cd75eb250ae36
git bisect good 35bc9c8f29a411c635a6d3094b37bec314e15b24
# good: [fcd1e7d167e4021ede132cc6406bfd6af3e66757] source sha:e040d8defb774255e083825863641493f4c7d9ff
git bisect good fcd1e7d167e4021ede132cc6406bfd6af3e66757
# good: [7d759867b92175db3c7fbdf85f8e3b57826fe98c] source sha:1240a0749e6a23a1a150df61e6a2e05c6b7b55be
git bisect good 7d759867b92175db3c7fbdf85f8e3b57826fe98c
# good: [d44d542140fa1564a8d6c85c19eb1926b30f6729] source sha:1d0727a104d76210814f41c1169df318e40c9d80
git bisect good d44d542140fa1564a8d6c85c19eb1926b30f6729
# good: [aa287e3da2ec591e8f920bec536ab3f8b1ae145f] source sha:61821277ed4974debd05af89cb7284602512088f
git bisect good aa287e3da2ec591e8f920bec536ab3f8b1ae145f
# good: [574b64b23f1025e0ae911a3c70790db0b76251c1] source sha:9e28155909a5d3295e2a531731790a42fdb4c8a2
git bisect good 574b64b23f1025e0ae911a3c70790db0b76251c1
# good: [7481b302ce5f6f10917e2b95fc2777b017615494] source sha:a3c8250c5b56a2cb40aa01b9a6a59e4daa1fd2f8
git bisect good 7481b302ce5f6f10917e2b95fc2777b017615494
# bad: [2f1b5be78ebfe5f4cebe2c4048c6647078ae6500] source sha:aeff83240c88435d11590f5e9c6fe9927a508c6a
git bisect bad 2f1b5be78ebfe5f4cebe2c4048c6647078ae6500
# good: [4c3891b1c65737356c7e245b768af90f261c5540] source sha:08b5048198d59441cb8033ed14cd17e68c943004
git bisect good 4c3891b1c65737356c7e245b768af90f261c5540
# first bad commit: [2f1b5be78ebfe5f4cebe2c4048c6647078ae6500] source sha:aeff83240c88435d11590f5e9c6fe9927a508c6a