$ git clone -n https://src.fedoraproject.org/rpms/ghc-haskell-gi-overloading.git /var/lib/mock/f41-build-837623-159296/root/chroot_tmpdir/scmroot/ghc-haskell-gi-overloading
Cloning into '/var/lib/mock/f41-build-837623-159296/root/chroot_tmpdir/scmroot/ghc-haskell-gi-overloading'...
$ git fetch origin 79a0e8eff6268e36d4eff057ca6e52031d60456c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-haskell-gi-overloading
 * [new ref]         79a0e8eff6268e36d4eff057ca6e52031d60456c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 79a0e8e bump release