$ git clone -n https://src.fedoraproject.org/rpms/ghc-polyparse.git /var/lib/mock/f38-build-side-42-init-devel-633012-26381/root/chroot_tmpdir/scmroot/ghc-polyparse
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-633012-26381/root/chroot_tmpdir/scmroot/ghc-polyparse'...
$ git fetch origin a565f5ffe07997c35f5864d116416d6e198b71f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-polyparse
 * [new ref]         a565f5ffe07997c35f5864d116416d6e198b71f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a565f5f Convert to %autorelease and %autochangelog