$ git clone -n https://src.fedoraproject.org/rpms/ghc-chunked-data.git /var/lib/mock/f38-build-side-42-init-devel-825517-28362/root/chroot_tmpdir/scmroot/ghc-chunked-data
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-825517-28362/root/chroot_tmpdir/scmroot/ghc-chunked-data'...
$ git fetch origin 59f3d64cafd5392cf766c68b421d260c12f7b428:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-chunked-data
 * [new ref]         59f3d64cafd5392cf766c68b421d260c12f7b428 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59f3d64 Convert to %autorelease and %autochangelog