$ git clone -n https://src.fedoraproject.org/rpms/emacs-common-ddskk.git /var/lib/mock/f45-build-8056-375/root/chroot_tmpdir/scmroot/emacs-common-ddskk
Cloning into '/var/lib/mock/f45-build-8056-375/root/chroot_tmpdir/scmroot/emacs-common-ddskk'...
$ git fetch origin 56293a6d611d377c9261e7d8df7734c65a06c9aa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/emacs-common-ddskk
 * [new ref]         56293a6d611d377c9261e7d8df7734c65a06c9aa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56293a6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild