$ git clone -n https://src.fedoraproject.org/rpms/vtk.git /var/lib/mock/f41-build-1033796-18593/root/chroot_tmpdir/scmroot/vtk
Cloning into '/var/lib/mock/f41-build-1033796-18593/root/chroot_tmpdir/scmroot/vtk'...
$ git fetch origin c12f2e51d4b9dd81995d6295b59f370d780b83b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vtk
 * [new ref]         c12f2e51d4b9dd81995d6295b59f370d780b83b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c12f2e5 Rebuilt for Python 3.13