$ git clone -n https://src.fedoraproject.org/rpms/cabal-install.git /var/lib/mock/f40-build-777122-129247/root/chroot_tmpdir/scmroot/cabal-install
Cloning into '/var/lib/mock/f40-build-777122-129247/root/chroot_tmpdir/scmroot/cabal-install'...
$ git fetch origin 28cd4fabbce1fac169c708dcf4047155067c0b86:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cabal-install
 * [new ref]         28cd4fabbce1fac169c708dcf4047155067c0b86 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 28cd4fa rebuild to fix s390x segfault (#2248097)