$ git clone -n http://fedora.riscv.rocks:3000/rpms/vtk.git /var/lib/mock/f42-build-863007-171311/root/chroot_tmpdir/scmroot/vtk
Cloning into '/var/lib/mock/f42-build-863007-171311/root/chroot_tmpdir/scmroot/vtk'...
$ git fetch origin 45cf19107db3c8f066c95e7eb47121d5b3e08531:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/vtk
 * [new ref]         45cf19107db3c8f066c95e7eb47121d5b3e08531 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45cf191 Bump, no change.