$ git clone -n https://src.fedoraproject.org/rpms/libxml2.git /var/lib/mock/f37-build-680968-77140/root/chroot_tmpdir/scmroot/libxml2
Cloning into '/var/lib/mock/f37-build-680968-77140/root/chroot_tmpdir/scmroot/libxml2'...
$ git reset --hard 3574feffb77b30e3b6c2831f8c2ff23270f1c1d3
HEAD is now at 3574fef Set build options to maintain (most) symbols from 2.9.14 (#2139546)