$ git clone -n https://src.fedoraproject.org/rpms/python-numcodecs.git /var/lib/mock/f41-build-814351-148895/root/chroot_tmpdir/scmroot/python-numcodecs
Cloning into '/var/lib/mock/f41-build-814351-148895/root/chroot_tmpdir/scmroot/python-numcodecs'...
$ git fetch origin 4c19c6d31b176ae1cb1ac25ad1d2b1129defbf9d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-numcodecs
 * [new ref]         4c19c6d31b176ae1cb1ac25ad1d2b1129defbf9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c19c6d Drop support for i686 builds