$ git clone -n https://src.fedoraproject.org/rpms/smoldyn.git /var/lib/mock/f40-build-780822-131336/root/chroot_tmpdir/scmroot/smoldyn
Cloning into '/var/lib/mock/f40-build-780822-131336/root/chroot_tmpdir/scmroot/smoldyn'...
$ git fetch origin 15da4edb89818c74bc6913bff421f9b83cc4c91e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/smoldyn
 * [new ref]         15da4edb89818c74bc6913bff421f9b83cc4c91e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 15da4ed Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild