$ git clone -n https://src.fedoraproject.org/rpms/ocean-sound-theme.git /var/lib/mock/f42-build-side-1-3554938-46650/root/chroot_tmpdir/scmroot/ocean-sound-theme
Cloning into '/var/lib/mock/f42-build-side-1-3554938-46650/root/chroot_tmpdir/scmroot/ocean-sound-theme'...
$ git fetch origin cc7e352191b5c59fb4bb08555e5310e1f0a97ea9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocean-sound-theme
 * [new ref]         cc7e352191b5c59fb4bb08555e5310e1f0a97ea9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc7e352 6.4.0