$ git clone -n https://src.fedoraproject.org/rpms/calibre.git /var/lib/mock/f33-build-153589-43337/root/chroot_tmpdir/scmroot/calibre
Cloning into '/var/lib/mock/f33-build-153589-43337/root/chroot_tmpdir/scmroot/calibre'...
$ git reset --hard 5de9bf2b2aaf7ff209a7aaddb8590782462c73a9
HEAD is now at 5de9bf2 Use official instead of custom tarball