$ git clone -n https://src.fedoraproject.org/rpms/python-numexpr.git /var/lib/mock/f31-build-97532-32970/root/chroot_tmpdir/scmroot/python-numexpr
Cloning into '/var/lib/mock/f31-build-97532-32970/root/chroot_tmpdir/scmroot/python-numexpr'...
$ git reset --hard 915cdce0fdc4696c2aa95ff862d9de9c1a41f034
HEAD is now at 915cdce Actually add the new sources