$ git clone -n https://src.fedoraproject.org/rpms/step.git /var/lib/mock/f42-build-863801-171749/root/chroot_tmpdir/scmroot/step
Cloning into '/var/lib/mock/f42-build-863801-171749/root/chroot_tmpdir/scmroot/step'...
$ git fetch origin 8794a48f61bbc6a688eac794dcddcc19bbe7bd1f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/step
 * [new ref]         8794a48f61bbc6a688eac794dcddcc19bbe7bd1f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8794a48 24.12.0