$ git clone -n https://src.fedoraproject.org/rpms/sundials.git /var/lib/mock/f39-build-2456823-61439/root/chroot_tmpdir/scmroot/sundials
Cloning into '/var/lib/mock/f39-build-2456823-61439/root/chroot_tmpdir/scmroot/sundials'...
$ git fetch origin a1e9d4106ccc597d5b817f14e705bb1d5569bc00:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sundials
 * [new ref]         a1e9d4106ccc597d5b817f14e705bb1d5569bc00 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a1e9d41 Rebuild for petsc-3.19.4| Disable MPICH tests