$ git clone -n https://src.fedoraproject.org/forks/hypersa/rpms/ghc-haskell-gi-base.git /var/lib/mock/f39-build-2218564-52611/root/chroot_tmpdir/scmroot/ghc-haskell-gi-base
Cloning into '/var/lib/mock/f39-build-2218564-52611/root/chroot_tmpdir/scmroot/ghc-haskell-gi-base'...
$ git fetch origin ebf753133cea12a423d8451e3e5192cbb0a70f03:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/forks/hypersa/rpms/ghc-haskell-gi-base
 * [new ref]         ebf753133cea12a423d8451e3e5192cbb0a70f03 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ebf7531 rv64 rebuild