$ git clone -n https://src.fedoraproject.org/rpms/gnumeric.git /var/lib/mock/f41-build-813550-148686/root/chroot_tmpdir/scmroot/gnumeric
Cloning into '/var/lib/mock/f41-build-813550-148686/root/chroot_tmpdir/scmroot/gnumeric'...
$ git fetch origin ca7ad49fee57645d003ded0b9fcc7558893f8d3f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnumeric
 * [new ref]         ca7ad49fee57645d003ded0b9fcc7558893f8d3f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca7ad49 Perl 5.40 rebuild