$ git clone -n https://src.fedoraproject.org/rpms/ghc-gi-gmodule.git /var/lib/mock/f39-build-1716649-41229/root/chroot_tmpdir/scmroot/ghc-gi-gmodule
Cloning into '/var/lib/mock/f39-build-1716649-41229/root/chroot_tmpdir/scmroot/ghc-gi-gmodule'...
$ git fetch origin fffc3b0b05322c74c3bc7b6e73b8e2db3ee45566:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-gi-gmodule
 * [new ref]         fffc3b0b05322c74c3bc7b6e73b8e2db3ee45566 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fffc3b0 https://hackage.haskell.org/package/gi-gmodule-2.0.5/changelog