$ git clone -n https://src.fedoraproject.org/rpms/java-runtime-decompiler.git /var/lib/mock/f40-build-2241330-53661/root/chroot_tmpdir/scmroot/java-runtime-decompiler
Cloning into '/var/lib/mock/f40-build-2241330-53661/root/chroot_tmpdir/scmroot/java-runtime-decompiler'...
$ git fetch origin 76057b3e1d9b6d01d5b43982f89bdc466089b1b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java-runtime-decompiler
 * [new ref]         76057b3e1d9b6d01d5b43982f89bdc466089b1b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 76057b3 Updated spotbugs patch