$ git clone -n https://src.fedoraproject.org/rpms/apache-commons-pool.git /var/lib/mock/f40-build-2379839-60448/root/chroot_tmpdir/scmroot/apache-commons-pool
Cloning into '/var/lib/mock/f40-build-2379839-60448/root/chroot_tmpdir/scmroot/apache-commons-pool'...
$ git fetch origin 91e0a536d01bfd1f4630fcab8e3aefa0eaf5b3dd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/apache-commons-pool
 * [new ref]         91e0a536d01bfd1f4630fcab8e3aefa0eaf5b3dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91e0a53 Port to apache-commons-parent 65