$ git clone -n https://src.fedoraproject.org/rpms/libsndfile.git /var/lib/mock/f43-build-59068677-6570801/root/chroot_tmpdir/scmroot/libsndfile
Cloning into '/var/lib/mock/f43-build-59068677-6570801/root/chroot_tmpdir/scmroot/libsndfile'...
$ git fetch origin c4fa895c58ff9b18b717c60483b67c6d32d2c953:KOJI_FETCH_HEAD
error: Server does not allow request for unadvertised object c4fa895c58ff9b18b717c60483b67c6d32d2c953
$ git reset --hard c4fa895c58ff9b18b717c60483b67c6d32d2c953
fatal: Could not parse object 'c4fa895c58ff9b18b717c60483b67c6d32d2c953'.