$ git clone -n https://src.fedoraproject.org/rpms/frotz.git /var/lib/mock/f40-build-2438017-60873/root/chroot_tmpdir/scmroot/frotz
Cloning into '/var/lib/mock/f40-build-2438017-60873/root/chroot_tmpdir/scmroot/frotz'...
$ git fetch origin 2128073488a86aa8c2716731fc94eebd3ecba18d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/frotz
 * [new ref]         2128073488a86aa8c2716731fc94eebd3ecba18d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2128073 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild