$ git clone -n https://src.fedoraproject.org/rpms/libnbd.git /var/lib/mock/f33-build-373945-61520/root/chroot_tmpdir/scmroot/libnbd
Cloning into '/var/lib/mock/f33-build-373945-61520/root/chroot_tmpdir/scmroot/libnbd'...
$ git reset --hard b66d579e9f7e6f9892846f55eadaff854d3a688d
HEAD is now at b66d579 New stable version 1.4.2.