$ git clone -n https://src.fedoraproject.org/rpms/boost.git /var/lib/mock/f31-build-56044-28175/root/chroot_tmpdir/scmroot/boost
Cloning into '/var/lib/mock/f31-build-56044-28175/root/chroot_tmpdir/scmroot/boost'...
$ git reset --hard 0666fd79bad20373f176534aa717f6bb9d4f2b7b
HEAD is now at 0666fd7 Fix Obsoletes tag to remove _isa (#1706079)