$ git clone -n https://src.fedoraproject.org/rpms/ghc-monad-par-extras.git /var/lib/mock/f39-build-1508296-35359/root/chroot_tmpdir/scmroot/ghc-monad-par-extras
Cloning into '/var/lib/mock/f39-build-1508296-35359/root/chroot_tmpdir/scmroot/ghc-monad-par-extras'...
$ git fetch origin 2160a00a7e55e4ce6feaa616eb29e549efb963e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-monad-par-extras
 * [new ref]         2160a00a7e55e4ce6feaa616eb29e549efb963e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2160a00 bump release