在git中，可以利用「git commit --amend」指令來修改commit時間；該方法既可以修改最近一次提交的日期，也可以修改指定某次提交的日期，其中日期的格式需要是「ISO-8601」格式，語法為「GIT_COMMITTER_DATE="時間" git commit --amend --date="時間"」。
本文操作環境：Windows10系統、Git2.30.0版、Dell G3電腦。
1.修改最近一次提交的作者日期和提交者日期
如果要修改最近一次commit的作者日期和提交者日期，直接使用git commit --amend即可
註:日期格式須為ISO-8601格式
GIT_COMMITTER_DATE="2017-10-08T09:51:07" git commit --amend --date="2017-10-08T09:51:07"
2.修改某次提交的作者日期和提交者日期
如果要更改某次(可以是最近一次也可以是非最近一次)提交的作者日期和提交者日期，可以使用互動式rebase：
#執行git rebase -i COMMIT_SHA ， 此COMMIT_SHA為待修改日期的commit的前一個commit的commit sha
在vi彈出交互信息中將待修改日期的commit前的pick修改為e
執行日期修改指令GIT_COMMITTER_DATE="2017-10-08T09:51:07" git commit --amend --date="2017-10- 08T09:51:07"
執行git rebase --continue轉到下一個commit
重複此過程，直到修改所有提交。透過git status可查看進展。
3.修改範例
目前git log提交資訊如下
admin@DESKTOP-PC MINGW64 /e/TestProj/ModifyTimeTest (master) $ git log --oneline 2fe64c4 (HEAD -> master) modify Readme.md 3 6b98331 modify Readme.md 2 98ddd80 modify Readme.md 1 fcfc064 add Readme.md
假設此時需要修改6b98331 modify Readme. md 2這一commit的作者日期和提交者日期
修改步驟為:
執行互動式變基指令git rebase -i 98ddd80
在彈出的vi編輯資訊中，將6b98331提交前的pick修改為e，隨後執行:wq 儲存
e 6b98331 modify Readme.md 2 # 此处原为pick,将pick修改为e / edit pick 2fe64c4 modify Readme.md 3 # Rebase 98ddd80..2fe64c4 onto 98ddd80 (2 commands) # # Commands: # p, pick <commit> = use commit # r, reword <commit> = use commit, but edit the commit message # e, edit <commit> = use commit, but stop for amending # s, squash <commit> = use commit, but meld into previous commit # f, fixup <commit> = like "squash", but discard this commit's log message # x, exec <command> = run command (the rest of the line) using shell # b, break = stop here (continue rebase later with 'git rebase --continue') # d, drop <commit> = remove commit # l, label <label> = label current HEAD with a name # t, reset <label> = reset HEAD to a label # m, merge [-C <commit> | -c <commit>] <label> [# <oneline>] # . create a merge commit using the original merge commit's # . message (or the oneline, if no original merge commit was # . specified). Use -c <commit> to reword the commit message. # # These lines can be re-ordered; they are executed from top to bottom. # # If you remove a line here THAT COMMIT WILL BE LOST. # # However, if you remove everything, the rebase will be aborted.
執行GIT_COMMITTER_DATE="2021-10-22T15:10:07" git commit --amend --date="2021 -10-22T15:10:07" 將作者日期和提交者日期均修改為2021-10-22T15:10:07。然後可選擇在彈出的vi資訊編輯窗中可修改提交日誌，然後執行 :wq 儲存
然後執行 git rebase --continue到下一個提交，直到儲存所有修改。完成後再使用git log查看提交資訊即可看到提交資訊已被修改
上述範例的完整日誌如下:
admin@DESKTOP-PC MINGW64 /e/TestProj/ModifyTimeTest (master) $ git log --oneline 2fe64c4 (HEAD -> master) modify Readme.md 3 6b98331 modify Readme.md 2 98ddd80 modify Readme.md 1 fcfc064 add Readme.md admin@DESKTOP-PC MINGW64 /e/TestProj/ModifyTimeTest (master) $ git rebase -i 98ddd80 Stopped at 6b98331... modify Readme.md 2 You can amend the commit now, with git commit --amend Once you are satisfied with your changes, run git rebase --continue admin@DESKTOP-PC MINGW64 /e/TestProj/ModifyTimeTest (master|REBASE 1/2) $ GIT_COMMITTER_DATE="2021-10-22T15:10:07" git commit --amend --date="2021-10-22T15:10:07" [detached HEAD 137f41d] modify Readme.md 2 Date: Fri Oct 22 15:10:07 2021 +0800 1 file changed, 16 insertions(+) admin@DESKTOP-PC MINGW64 /e/TestProj/ModifyTimeTest (master|REBASE 1/2) $ git status interactive rebase in progress; onto 98ddd80 Last command done (1 command done): edit 6b98331 modify Readme.md 2 Next command to do (1 remaining command): pick 2fe64c4 modify Readme.md 3 (use "git rebase --edit-todo" to view and edit) You are currently editing a commit while rebasing branch 'master' on '98ddd80'. (use "git commit --amend" to amend the current commit) (use "git rebase --continue" once you are satisfied with your changes) nothing to commit, working tree clean admin@DESKTOP-PC MINGW64 /e/TestProj/ModifyTimeTest (master|REBASE 1/2) $ git rebase --continue Successfully rebased and updated refs/heads/master. admin@DESKTOP-PC MINGW64 /e/TestProj/ModifyTimeTest (master) $ git status On branch master nothing to commit, working tree clean
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