$ git clone -n https://src.fedoraproject.org/rpms/doge.git /var/lib/mock/f45-build-7664-368/root/chroot_tmpdir/scmroot/doge
Cloning into '/var/lib/mock/f45-build-7664-368/root/chroot_tmpdir/scmroot/doge'...
$ git fetch origin 4b9e35ede159c3814e8ad98a4ed9c5187e1d1858:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/doge
 * [new ref]         4b9e35ede159c3814e8ad98a4ed9c5187e1d1858 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b9e35e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild