$ git clone -n https://src.fedoraproject.org/rpms/chromaprint.git /var/lib/mock/f39-build-1706579-41221/root/chroot_tmpdir/scmroot/chromaprint
Cloning into '/var/lib/mock/f39-build-1706579-41221/root/chroot_tmpdir/scmroot/chromaprint'...
$ git fetch origin 4a56c4e00d6e638fa879829dfd106b9869c96989:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/chromaprint
 * [new ref]         4a56c4e00d6e638fa879829dfd106b9869c96989 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a56c4e Rebuild post bootstrap build for ffmpeg/codec2.