pub fn creation_entry(reflog: &str) -> Option<String>Expand description
The commit a branch’s latest creation entry names, from the raw reflog
text git keeps for the ref: one <old> <new> <identity>\t<message>
line per update, oldest first.
The creation entry is the one whose old object ID is all zeros. A
reflog with none — expired in part, or rewritten — answers None, and
so does one that does not parse: an absent creation proves nothing,
which keeps the branch.