## R3/R4 memo + dedupe at HEAD b2948332e22490d654b31a70a95767ee6baa7e5e  2026-10-22T15:38:06Z
prw-rw-r-- 1 ubuntu ubuntu 0 Oct 22 15:38 fifo-repo/.git/config
prw-rw-r-- 1 ubuntu ubuntu 0 Oct 22 15:38 shared.git/config
gitdir: /tmp/ev-23690/capture/fx-r3/ws/shared.git/worktrees/wt-a
gitdir: /tmp/ev-23690/capture/fx-r3/ws/shared.git/worktrees/wt-b
$ EV_MARK=1 strace -f -qq -s 300 -e trace=execve -o /tmp/ev-23690/capture/r3-strace.log node scan.ts /home/ubuntu/wt/pr-23690 ... 3
scan 1: 2115 ms
scan 2: 83 ms
scan 3: 69 ms
exit=0
per-scan results:
{"scan":1,"ms":2115,"candidates":[{"path":"normal","git":{"remoteKey":"github.com/acme/normal","repository":"acme/normal"}},{"path":"fifo-repo","git":{"remoteKey":null,"repository":null}}]}
{"scan":2,"ms":83,"candidates":[{"path":"normal","git":{"remoteKey":"github.com/acme/normal","repository":"acme/normal"}},{"path":"fifo-repo","git":{"remoteKey":null,"repository":null}}]}
{"scan":3,"ms":69,"candidates":[{"path":"normal","git":{"remoteKey":"github.com/acme/normal","repository":"acme/normal"}},{"path":"fifo-repo","git":{"remoteKey":null,"repository":null}}]}

cat execs per scan (from strace execve, split on marker execs):
scan 1: cat execs=7  fifo-repo/.git/config=1  shared.git/config=1
scan 2: cat execs=5  fifo-repo/.git/config=0  shared.git/config=0
scan 3: cat execs=5  fifo-repo/.git/config=0  shared.git/config=0

raw cat execve lines:
execve("/bin/true", ["/bin/true", "ev-scan-marker-1"], 0x87eef20 /* 47 vars */) = 0
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/wt-a/.git"], 0x87a6320 /* 47 vars */) = 0
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/wt-b/.git"], 0x87a6320 /* 47 vars */) = 0
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/shared.git/worktrees/wt-a/commondir"], 0x87a6320 /* 47 vars */) = 0
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/shared.git/worktrees/wt-b/commondir"], 0x87a6320 /* 47 vars */ <unfinished ...>
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/normal/.git/config"], 0x87a6320 /* 47 vars */) = 0
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/fifo-repo/.git/config"], 0x87a6320 /* 47 vars */ <unfinished ...>
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/shared.git/config"], 0x87a6320 /* 47 vars */) = 0
execve("/bin/true", ["/bin/true", "ev-scan-marker-2"], 0x8e78c60 /* 47 vars */) = 0
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/wt-a/.git"], 0x87a6320 /* 47 vars */) = 0
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/wt-b/.git"], 0x87a6320 /* 47 vars */ <unfinished ...>
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/shared.git/worktrees/wt-a/commondir"], 0x87a6320 /* 47 vars */) = 0
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/shared.git/worktrees/wt-b/commondir"], 0x87a6320 /* 47 vars */ <unfinished ...>
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/normal/.git/config"], 0x87a6320 /* 47 vars */) = 0
execve("/bin/true", ["/bin/true", "ev-scan-marker-3"], 0x8e76f30 /* 47 vars */) = 0
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/wt-a/.git"], 0x87a6320 /* 47 vars */) = 0
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/wt-b/.git"], 0x87a6320 /* 47 vars */ <unfinished ...>
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/shared.git/worktrees/wt-a/commondir"], 0x87a6320 /* 47 vars */) = 0
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/shared.git/worktrees/wt-b/commondir"], 0x87a6320 /* 47 vars */ <unfinished ...>
execve("/usr/bin/cat", ["cat", "--", "/tmp/ev-23690/capture/fx-r3/ws/normal/.git/config"], 0x87a6320 /* 47 vars */) = 0

cleanup FIFOs by explicit path:
removed '/tmp/ev-23690/capture/fx-r3/ws/fifo-repo/.git/config'
removed '/tmp/ev-23690/capture/fx-r3/ws/shared.git/config'