[llvm-bugs] [Bug 44191] New: git-based snapshot versioning is incorect

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=44191

            Bug ID: 44191
           Summary: git-based snapshot versioning is incorect
           Product: Packaging
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: deb packages
          Assignee: unassignedbugs at nondot.org
          Reporter: lebedev.ri at gmail.com
                CC: llvm-bugs at lists.llvm.org

dpkg: warning: downgrading clang-format-10 from
1:10~+20191129111110+407ac2eb5f1-1~exp1~20191129101723.2900 to
1:10~+20191129100610+905b002c139-1~exp1~20191129211156.2901
(Reading database ... 411229 files and directories currently installed.)
Preparing to unpack
.../00-clang-format-10_1%3a10~+20191129100610+905b002c139-1~exp1~20191129211156.2901_amd64.deb
...
Unpacking clang-format-10
(1:10~+20191129100610+905b002c139-1~exp1~20191129211156.2901) over
(1:10~+20191129111110+407ac2eb5f1-1~exp1~20191129101723.2900) ...


So we go from https://github.com/llvm/llvm-project/commit/407ac2eb5f1 to
https://github.com/llvm/llvm-project/commit/905b002c139
I'm pretty sure it's not a downgrade, in git log 905b002c139 is newer than
407ac2eb5f1.

Is there a traditional mixup between git author commit time, and git commit
commit time?

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