$ git clone -n https://src.fedoraproject.org/rpms/ghc-text-metrics.git /var/lib/mock/f38-build-side-42-init-devel-750531-27661/root/chroot_tmpdir/scmroot/ghc-text-metrics
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-750531-27661/root/chroot_tmpdir/scmroot/ghc-text-metrics'...
$ git fetch origin d60145a9b02b23f3e29e50257046415ec6f49e2b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-text-metrics
 * [new ref]         d60145a9b02b23f3e29e50257046415ec6f49e2b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d60145a Convert to %autorelease and %autochangelog