$ git clone -n https://src.fedoraproject.org/rpms/phonon-backend-gstreamer.git /var/lib/mock/f45-build-27809-626/root/chroot_tmpdir/scmroot/phonon-backend-gstreamer
Cloning into '/var/lib/mock/f45-build-27809-626/root/chroot_tmpdir/scmroot/phonon-backend-gstreamer'...
$ git fetch origin 112ba5821ca0e057d0a2523fc8f37b53feec9056:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/phonon-backend-gstreamer
 * [new ref]         112ba5821ca0e057d0a2523fc8f37b53feec9056 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 112ba58 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild