$ git clone -n https://src.fedoraproject.org/rpms/java-1.8.0-openjdk-portable.git /var/lib/mock/f41-build-750619-13382/root/chroot_tmpdir/scmroot/java-1.8.0-openjdk-portable
Cloning into '/var/lib/mock/f41-build-750619-13382/root/chroot_tmpdir/scmroot/java-1.8.0-openjdk-portable'...
$ git fetch origin 049256fcce2ca4a3d0d7a9043549cc491b7580db:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java-1.8.0-openjdk-portable
 * [new ref]         049256fcce2ca4a3d0d7a9043549cc491b7580db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 049256f April CPU