$ git clone -n https://src.fedoraproject.org/rpms/ghc-data-default-instances-old-locale.git /var/lib/mock/f38-build-side-42-init-devel-730364-27446/root/chroot_tmpdir/scmroot/ghc-data-default-instances-old-locale
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-730364-27446/root/chroot_tmpdir/scmroot/ghc-data-default-instances-old-locale'...
$ git fetch origin 5f458c0180f9a584feb864760d3799678c40ed3d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-data-default-instances-old-locale
 * [new ref]         5f458c0180f9a584feb864760d3799678c40ed3d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f458c0 Convert to %autorelease and %autochangelog