$ git clone -n https://src.fedoraproject.org/rpms/libxml2.git /var/lib/mock/f40-build-764225-122869/root/chroot_tmpdir/scmroot/libxml2
Cloning into '/var/lib/mock/f40-build-764225-122869/root/chroot_tmpdir/scmroot/libxml2'...
$ git reset --hard acb3abc4bd6bbbca9b91c8682eb58e8cb8d2224b
HEAD is now at acb3abc Update to 2.12.3 (#2254194)