On Thu, Aug 29, 2019 at 10:38:05AM -0400, Jeff King wrote: > So any fixes there have to happen on the client side. I am still > confused about why the client is writing in this case, per the argument > in 014ade7484 (upload-pack: send ERR packet for non-tip objects, > 2019-04-13). It would be nice to use GIT_TRACE_PACKET to see what it's > trying to write, but I still haven't been able to reproduce the issue. It's the "done" line: + cat trace-packet packet: upload-pack> 5e26403b4485d7a44fd8b65dc3f71e21c0dd6fad HEAD\0multi_ack thin-pack side-band side-band-64k ofs-delta shallow deepen-since deepen-not deepen-relative no-progress include-tag multi_ack_detailed allow-tip-sha1-in-want allow-reachable-sha1-in-want symref=HEAD:refs/heads/master agent=git/2.23.0.40.g4d780d4382.dirty packet: upload-pack> 5e26403b4485d7a44fd8b65dc3f71e21c0dd6fad refs/heads/master packet: upload-pack> 0000 packet: fetch< 5e26403b4485d7a44fd8b65dc3f71e21c0dd6fad HEAD\0multi_ack thin-pack side-band side-band-64k ofs-delta shallow deepen-since deepen-not deepen-relative no-progress include-tag multi_ack_detailed allow-tip-sha1-in-want allow-reachable-sha1-in-want symref=HEAD:refs/heads/master agent=git/2.23.0.40.g4d780d4382.dirty packet: fetch< 5e26403b4485d7a44fd8b65dc3f71e21c0dd6fad refs/heads/master packet: fetch< 0000 packet: fetch> want 64ea4c133d59fa98e86a771eda009872d6ab2886 multi_ack_detailed side-band-64k thin-pack no-progress ofs-delta deepen-since deepen-not agent=git/2.23.0.40.g4d780d4382.dirty packet: fetch> 0000 packet: upload-pack< want 64ea4c133d59fa98e86a771eda009872d6ab2886 multi_ack_detailed side-band-64k thin-pack no-progress ofs-delta deepen-since deepen-not agent=git/2.23.0.40.g4d780d4382.dirty packet: upload-pack< 0000 packet: upload-pack> ERR upload-pack: not our ref 64ea4c133d59fa98e86a771eda009872d6ab2886 packet: upload-pack> 0000 packet: fetch> done In the avarage successful run that "fetch> done" pkt-line is immediately after the "fetch> 0000". The above is on my Linux box; here is a failure on macOS, essentially the same: https://travis-ci.org/szeder/git/jobs/578555606#L3453