$ git clone -n https://src.fedoraproject.org/rpms/git-publish.git /var/lib/mock/f45-build-11085-426/root/chroot_tmpdir/scmroot/git-publish
Cloning into '/var/lib/mock/f45-build-11085-426/root/chroot_tmpdir/scmroot/git-publish'...
$ git fetch origin 84a617bb0b7ddc597f694c2913c69ad31a1d2d6e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/git-publish
 * [new ref]         84a617bb0b7ddc597f694c2913c69ad31a1d2d6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84a617b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild