$ git clone -n https://src.fedoraproject.org/rpms/java-runtime-decompiler.git /var/lib/mock/f40-build-2005031-45025/root/chroot_tmpdir/scmroot/java-runtime-decompiler
Cloning into '/var/lib/mock/f40-build-2005031-45025/root/chroot_tmpdir/scmroot/java-runtime-decompiler'...
$ git fetch origin c2700e87eb8f3043b972b83e7382523fccd6a43f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java-runtime-decompiler
 * [new ref]         c2700e87eb8f3043b972b83e7382523fccd6a43f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2700e8 update dto 8.0