$ git clone -n https://src.fedoraproject.org/rpms/mathgl.git /var/lib/mock/f42-build-3355590-45025/root/chroot_tmpdir/scmroot/mathgl
Cloning into '/var/lib/mock/f42-build-3355590-45025/root/chroot_tmpdir/scmroot/mathgl'...
$ git fetch origin 60b4012bc6eaa80102ca7ddfd0aa0db3f837600f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mathgl
 * [new ref]         60b4012bc6eaa80102ca7ddfd0aa0db3f837600f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 60b4012 Update to new numpy.i for swig