$ git clone -n https://src.fedoraproject.org/rpms/nbdkit.git /var/lib/mock/f33-build-283197-51835/root/chroot_tmpdir/scmroot/nbdkit
Cloning into '/var/lib/mock/f33-build-283197-51835/root/chroot_tmpdir/scmroot/nbdkit'...
$ git reset --hard b8735c2055047bc8da0aa47a672f2b559dc064e0
HEAD is now at b8735c2 New upstream development version 1.21.18. Fixes nbdkit-gzip-filter.