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Support getting changed files when commit ID is EmptySHA (#26290) (#26316)

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Backport #26290 by @Zettat123

Fixes #26270.

Co-Author: @wxiaoguang 

Thanks @lunny for providing this solution

As
https://github.com/go-gitea/gitea/issues/26270#issuecomment-1661695151
said, at present we cannot get the names of changed files correctly when
the `OldCommitID` is `EmptySHA`. In this PR, the `GetCommitFilesChanged`
method is added and will be used to get the changed files by commit ID.

References:
- https://stackoverflow.com/a/424142

Co-authored-by: Zettat123 <zettat123@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
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Giteabot 2023-08-04 11:27:45 +08:00 • committed by GitHub
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4
modules/git/sha1.go
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@ -11,10 +11,10 @@ import (
"strings"
)
// EmptySHA defines empty git SHA
// EmptySHA defines empty git SHA (undefined, non-existent)
const EmptySHA = "0000000000000000000000000000000000000000"
// EmptyTreeSHA is the SHA of an empty tree
// EmptyTreeSHA is the SHA of an empty tree, the root of all git repositories
const EmptyTreeSHA = "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
// SHAFullLength is the full length of a git SHA