$ git clone -n https://src.fedoraproject.org/rpms/eclipse-swt.git /var/lib/mock/f40-build-2226301-52918/root/chroot_tmpdir/scmroot/eclipse-swt
Cloning into '/var/lib/mock/f40-build-2226301-52918/root/chroot_tmpdir/scmroot/eclipse-swt'...
$ git fetch origin c9c9db3d30761c799929267b8e99497222e6b0fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/eclipse-swt
 * [new ref]         c9c9db3d30761c799929267b8e99497222e6b0fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c9c9db3 Bump to 4.29