$ git clone -n https://src.fedoraproject.org/rpms/dcfldd.git /var/lib/mock/f42-build-3528299-46309/root/chroot_tmpdir/scmroot/dcfldd
Cloning into '/var/lib/mock/f42-build-3528299-46309/root/chroot_tmpdir/scmroot/dcfldd'...
$ git fetch origin b1f408e54b0b089d94e6b98299e2179a94d4e708:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dcfldd
 * [new ref]         b1f408e54b0b089d94e6b98299e2179a94d4e708 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1f408e Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild