$ git clone -n https://src.fedoraproject.org/rpms/libblockdev.git /var/lib/mock/f31-build-110859-34080/root/chroot_tmpdir/scmroot/libblockdev
Cloning into '/var/lib/mock/f31-build-110859-34080/root/chroot_tmpdir/scmroot/libblockdev'...
$ git reset --hard 838fc781ec01e0e0024aa4d0ed8e68d3c2e68740
HEAD is now at 838fc78 New version 2.23