~/bibisect-win32-6.2
$ git bisect bad
0b1d96dab30c6452607777d9e5806da81958e7b5 is the first bad commit
commit 0b1d96dab30c6452607777d9e5806da81958e7b5
Author: Norbert Thiebaud <nthiebaud@gmail.com>
Date:   Mon Sep 10 03:30:29 2018 -0700

    source sha:eb34a6a93fcdebe545ab267d7cc7c5c72bab22c8

    source sha:eb34a6a93fcdebe545ab267d7cc7c5c72bab22c8

:040000 040000 9c97af931161dad5a6690c9f382f5ad906d0deda 81e8b9ae3b53984086d54b98b8fb6ff11db1d6f1 M      instdir

 ~/bibisect-win32-6.2
$ git bisect log
# bad: [4b622d0e28c637651ecbe14e158ceb7e3f6aa132] source sha:425af6845ebe066c950b0b63f50563e067485f3e
# good: [b0a56ec98b1368cb5e3e531e0b3f69565af91609] source sha:3a801799536e6870f2fb111b1cc00b9575a35a39
git bisect start 'origin/master' 'oldest'
# good: [a017ab0e4319a53da3736990bf6a8d4bec1a34d9] source sha:623cb7a1299386f8d8f7c53b0369a40cae51b752
git bisect good a017ab0e4319a53da3736990bf6a8d4bec1a34d9
# good: [a7e0f9e6f03e9224fae7c931a4da3700db0f40d9] source sha:867ee21fe4c0c9216aea57850efec4de3c3fc554
git bisect good a7e0f9e6f03e9224fae7c931a4da3700db0f40d9
# bad: [8e013a31f692f354d06bf911b4b8f881a2051337] source sha:8d96717154c0c69e46032c10d7e7ddef297a4668
git bisect bad 8e013a31f692f354d06bf911b4b8f881a2051337
# bad: [552481dde57ac0ee4593a4b3f3a8db788d7d4a4f] source sha:30530afaaa715473a2f9c3f068beeed5f3a98daf
git bisect bad 552481dde57ac0ee4593a4b3f3a8db788d7d4a4f
# bad: [c625b90f0dc7c03ab2641b60aefbf0e1658e8977] source sha:e1d3ecb498c9b28731392a6cb8557fe73fcfb5e9
git bisect bad c625b90f0dc7c03ab2641b60aefbf0e1658e8977
# good: [97ab2acfaaf3439cb010b68c2fbd4bbc541e363b] source sha:a6a5064c371017676f606a7a2823214146003572
git bisect good 97ab2acfaaf3439cb010b68c2fbd4bbc541e363b
# bad: [ca7bd9cd8f45d5b0312fe1b251fcf737ed2e1f7c] source sha:b40e57f403b3d4ccb90f3b76caf8d537b61826dc
git bisect bad ca7bd9cd8f45d5b0312fe1b251fcf737ed2e1f7c
# bad: [8a557591c80388c4efa7b2ca35f8ea26b303685d] source sha:916260dcbe84fcde76ee66c752391123f44ea4da
git bisect bad 8a557591c80388c4efa7b2ca35f8ea26b303685d
# bad: [27701d3ddbf52bec09c06d95255a7c20e0d9fb2c] source sha:926e4e469d0285ee72f8da80f00370b4b3120417
git bisect bad 27701d3ddbf52bec09c06d95255a7c20e0d9fb2c
# good: [8521a49e70d65e06020096fadd7854709852fd6f] source sha:663e09800b5bde6c3bfb8655628b4d08f040fedb
git bisect good 8521a49e70d65e06020096fadd7854709852fd6f
# bad: [a757f6c3f6d741f8c8627acb08a4cebffaccdf65] source sha:66838c2418df4d016be0da0ef1c7e54934c03421
git bisect bad a757f6c3f6d741f8c8627acb08a4cebffaccdf65
# bad: [0b1d96dab30c6452607777d9e5806da81958e7b5] source sha:eb34a6a93fcdebe545ab267d7cc7c5c72bab22c8
git bisect bad 0b1d96dab30c6452607777d9e5806da81958e7b5
# first bad commit: [0b1d96dab30c6452607777d9e5806da81958e7b5] source sha:eb34a6a93fcdebe545ab267d7cc7c5c72bab22c8