[Bug] --simplify-by-decoration prints undecorated commit

Hello,

In the following scenario, --simplify-by-decoration prints an undecorated commit, which seems to be a bug.

# Clone this repo $ git clone https://github.com/bitnami/charts.git

# Test --simplify-by-decoration with -1, which should display the first decorated commit $ git log -1 --simplify-by-decoration --oneline f137d2178d f137d2178d (HEAD -> main, tag: gitea/3.1.2, origin/main, origin/HEAD) [bitnami/gitea] Release 3.1.2 (#31031) # The above output makes sense: the commit is decorated.

# Now, let's try --simplify-by-decoration on another commit $ git log -1 --simplify-by-decoration --oneline 1e3ef455cc 025a87d9db Merge branch 'master' into master # The above output seems incorrect, because the commit isn't decorated

# Let's confirm if the above commit is decorated $ git show-ref --tags --heads | grep 025a87d9db $ # No output, so the commit isn't decorated. That seems to confirm the bug.

I expected --simplify-by-decoration to display decorated commits.

Git printed commit 025a87d9db, which isn't decorated.

Commit 025a87d9db isn't decorated, but the --simplify-by-decoration command prints it.

No

[System Info] git version: git version 2.47.0 cpu: x86_64 no commit associated with this build sizeof-long: 8 sizeof-size_t: 8 shell-path: /bin/sh feature: fsmonitor--daemon libcurl: 8.4.0 zlib: 1.2.12 uname: Darwin 23.6.0 Darwin Kernel Version 23.6.0: Mon Jul 29 21:13:00 PDT 2024; root:xnu-10063.141.2~1/RELEASE_X86_64 x86_64 compiler info: clang: 15.0.0 (clang-1500.3.9.4) libc info: no libc information available $SHELL (typically, interactive shell): /usr/local/bin/bash

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-- Best regards, Aleksander Korzynski