$ git clone -n https://src.fedoraproject.org/rpms/rtaudio.git /var/lib/mock/f45-build-34700-690/root/chroot_tmpdir/scmroot/rtaudio
Cloning into '/var/lib/mock/f45-build-34700-690/root/chroot_tmpdir/scmroot/rtaudio'...
$ git fetch origin e2876ada61422933dff68849b2e4ff8f7a295e9c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rtaudio
 * [new ref]         e2876ada61422933dff68849b2e4ff8f7a295e9c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e2876ad Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild