$ git clone -n https://src.fedoraproject.org/rpms/calibre.git /var/lib/mock/f31-build-61816-28969/root/chroot_tmpdir/scmroot/calibre
Cloning into '/var/lib/mock/f31-build-61816-28969/root/chroot_tmpdir/scmroot/calibre'...
$ git reset --hard baa4ed169a2ce1730347e4af1b73ef9ef2a2016f
HEAD is now at baa4ed1 Adjust for liberation fonts moving around.