$ git clone -n https://src.fedoraproject.org/rpms/ghc-microlens-th.git /var/lib/mock/f38-build-side-42-init-devel-567672-25904/root/chroot_tmpdir/scmroot/ghc-microlens-th
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-567672-25904/root/chroot_tmpdir/scmroot/ghc-microlens-th'...
$ git fetch origin 218917e5e301ce6795490f59a07ef43d36350997:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-microlens-th
 * [new ref]         218917e5e301ce6795490f59a07ef43d36350997 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 218917e Convert to %autorelease and %autochangelog