$ git clone -n https://src.fedoraproject.org/rpms/ghc-microlens-platform.git /var/lib/mock/f38-build-side-42-init-devel-1120392-30230/root/chroot_tmpdir/scmroot/ghc-microlens-platform
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1120392-30230/root/chroot_tmpdir/scmroot/ghc-microlens-platform'...
$ git fetch origin f39cc3d6d607e7d5d65f5a39e8b3af23f16b9c57:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-microlens-platform
 * [new ref]         f39cc3d6d607e7d5d65f5a39e8b3af23f16b9c57 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f39cc3d Convert to %autorelease and %autochangelog