$ git clone -n https://src.fedoraproject.org/rpms/sound-theme-freedesktop.git /var/lib/mock/f45-build-36234-702/root/chroot_tmpdir/scmroot/sound-theme-freedesktop
Cloning into '/var/lib/mock/f45-build-36234-702/root/chroot_tmpdir/scmroot/sound-theme-freedesktop'...
$ git fetch origin 6d21db61b431a993c4bec07545b4625307863172:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sound-theme-freedesktop
 * [new ref]         6d21db61b431a993c4bec07545b4625307863172 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d21db6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild