$ git clone -n https://src.fedoraproject.org/rpms/ghc-pipes.git /var/lib/mock/f38-build-side-42-init-devel-738372-27649/root/chroot_tmpdir/scmroot/ghc-pipes
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-738372-27649/root/chroot_tmpdir/scmroot/ghc-pipes'...
$ git fetch origin 5f515b97a78846176c4ab00e1b8fc02de5d23f89:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-pipes
 * [new ref]         5f515b97a78846176c4ab00e1b8fc02de5d23f89 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f515b9 Convert to %autorelease and %autochangelog