$ git clone -n https://src.fedoraproject.org/rpms/ghc-ed25519.git /var/lib/mock/f40-build-776039-128585/root/chroot_tmpdir/scmroot/ghc-ed25519
Cloning into '/var/lib/mock/f40-build-776039-128585/root/chroot_tmpdir/scmroot/ghc-ed25519'...
$ git fetch origin 657ea4f9fd0bdb2d244f5337758177d5037ca0c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-ed25519
 * [new ref]         657ea4f9fd0bdb2d244f5337758177d5037ca0c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 657ea4f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild