$ git clone -n https://src.fedoraproject.org/rpms/k3guitune.git /var/lib/mock/f41-build-786012-13590/root/chroot_tmpdir/scmroot/k3guitune
Cloning into '/var/lib/mock/f41-build-786012-13590/root/chroot_tmpdir/scmroot/k3guitune'...
$ git fetch origin 2129bf2fb5f9fa97d3c5bfb75642ce902b23e5fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/k3guitune
 * [new ref]         2129bf2fb5f9fa97d3c5bfb75642ce902b23e5fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2129bf2 Eliminate use of obsolete %patchN syntax (#2283636)