$ git clone -n https://src.fedoraproject.org/rpms/perl-Tk-DirSelect.git /var/lib/mock/f45-build-27236-621/root/chroot_tmpdir/scmroot/perl-Tk-DirSelect
Cloning into '/var/lib/mock/f45-build-27236-621/root/chroot_tmpdir/scmroot/perl-Tk-DirSelect'...
$ git fetch origin e1030c6c72141fb89def58e4b794f22b1b8981bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Tk-DirSelect
 * [new ref]         e1030c6c72141fb89def58e4b794f22b1b8981bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1030c6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild