$ git clone -n https://src.fedoraproject.org/rpms/ocfs2-tools.git /var/lib/mock/f45-build-20844-574/root/chroot_tmpdir/scmroot/ocfs2-tools
Cloning into '/var/lib/mock/f45-build-20844-574/root/chroot_tmpdir/scmroot/ocfs2-tools'...
$ git fetch origin 9545716257e1e163c1c3eb9f9c0926c746ab7320:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocfs2-tools
 * [new ref]         9545716257e1e163c1c3eb9f9c0926c746ab7320 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9545716 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild