$ git clone -n https://src.fedoraproject.org/rpms/python-antlr4-python3-runtime.git /var/lib/mock/f38-build-side-42-init-devel-1087959-30040/root/chroot_tmpdir/scmroot/python-antlr4-python3-runtime
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1087959-30040/root/chroot_tmpdir/scmroot/python-antlr4-python3-runtime'...
$ git fetch origin 1e8809f84f1fd40bf12d4fd597397e27644e400b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-antlr4-python3-runtime
 * [new ref]         1e8809f84f1fd40bf12d4fd597397e27644e400b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e8809f Update README