$ git clone -n https://src.fedoraproject.org/rpms/kcron.git /var/lib/mock/f42-build-side-1-3521556-46115/root/chroot_tmpdir/scmroot/kcron
Cloning into '/var/lib/mock/f42-build-side-1-3521556-46115/root/chroot_tmpdir/scmroot/kcron'...
$ git fetch origin fe117012651f59b43cd03cec63951c0b67312576:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kcron
 * [new ref]         fe117012651f59b43cd03cec63951c0b67312576 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fe11701 25.04.0