$ git clone -n https://src.fedoraproject.org/rpms/rtmidi.git /var/lib/mock/f45-build-34740-691/root/chroot_tmpdir/scmroot/rtmidi
Cloning into '/var/lib/mock/f45-build-34740-691/root/chroot_tmpdir/scmroot/rtmidi'...
$ git fetch origin 6061df4c3fdcd47f1dad766062230d9297410b95:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rtmidi
 * [new ref]         6061df4c3fdcd47f1dad766062230d9297410b95 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6061df4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild