$ git clone -n https://src.fedoraproject.org/rpms/libnbd.git /var/lib/mock/f31-build-59148-28546/root/chroot_tmpdir/scmroot/libnbd
Cloning into '/var/lib/mock/f31-build-59148-28546/root/chroot_tmpdir/scmroot/libnbd'...
$ git reset --hard bb085d8c8356c4320906c64da8506d37af9c1814
HEAD is now at bb085d8 New upstream version 0.1.8.