$ git clone -n https://src.fedoraproject.org/rpms/sundials.git /var/lib/mock/f40-build-786779-134615/root/chroot_tmpdir/scmroot/sundials
Cloning into '/var/lib/mock/f40-build-786779-134615/root/chroot_tmpdir/scmroot/sundials'...
$ git fetch origin 1e87b1eb7b12621470ad6b3a8ddcf47737061b5f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sundials
 * [new ref]         1e87b1eb7b12621470ad6b3a8ddcf47737061b5f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e87b1e Rebuild with suitesparse 7.6.0