git commit --amend した後にプッシュできない

git commit --amend
git push --force-with-lease origin feature/my-branch

# amend せずに普通の修正コミットを足す
git add fix.txt
git commit -m "fix: typo in previous commit"
git push origin main

git reflog
# 例:
# a1b2c3d HEAD@{1}: commit (amend): ...
# 0e9f8e7 HEAD@{2}: commit: ...   ← amend 前の SHA
git reset --hard 0e9f8e7

# NG: 他者の push まで上書きする
git push --force origin main
 
# OK: リモートが想定通りの時だけ上書き
git push --force-with-lease origin main

warning: You appear to have cloned an empty repository.
push 済み SHA: 3cb5a58

$ git commit -a --amend -m "init (amended)"
[main 884efb7] init (amended)
 Date: Sun Aug 2 08:42:17 2026 +0000
 1 file changed, 1 insertion(+)
 create mode 100644 app.txt
amend 後 SHA : 884efb7

$ git push origin main
To /tmp/tmp.bPOnBL/remote.git
 ! [rejected]        main -> main (non-fast-forward)
error: failed to push some refs to '/tmp/tmp.bPOnBL/remote.git'
hint: Updates were rejected because the tip of your current branch is behind
hint: its remote counterpart. If you want to integrate the remote changes,
hint: use 'git pull' before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.
push の終了コード: 1

$ git push --force-with-lease origin main
To /tmp/tmp.bPOnBL/remote.git
 + 3cb5a58...884efb7 main -> main (forced update)
force-with-lease の終了コード: 0

$ git reflog --oneline
884efb7 HEAD@{0}: commit (amend): init (amended)
3cb5a58 HEAD@{1}: commit (initial): init