$ git clone -n https://src.fedoraproject.org/rpms/k3guitune.git /var/lib/mock/f45-build-14494-461/root/chroot_tmpdir/scmroot/k3guitune
Cloning into '/var/lib/mock/f45-build-14494-461/root/chroot_tmpdir/scmroot/k3guitune'...
$ git fetch origin 49c4d080e37d1a60074926722bfe8f3aaa8a3a77:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/k3guitune
 * [new ref]         49c4d080e37d1a60074926722bfe8f3aaa8a3a77 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49c4d08 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild