$ git clone -n https://src.fedoraproject.org/rpms/ghc-colourista.git /var/lib/mock/f38-build-side-42-init-devel-623447-26362/root/chroot_tmpdir/scmroot/ghc-colourista
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-623447-26362/root/chroot_tmpdir/scmroot/ghc-colourista'...
$ git fetch origin ceb37cfe1cc8c6cd9e53577c5a7eb37c2c11af30:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-colourista
 * [new ref]         ceb37cfe1cc8c6cd9e53577c5a7eb37c2c11af30 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ceb37cf ghc.ppc64le rts does not have -rtsopts=-N