$ git clone -n https://src.fedoraproject.org/rpms/openjph.git /var/lib/mock/f45-build-21075-578/root/chroot_tmpdir/scmroot/openjph
Cloning into '/var/lib/mock/f45-build-21075-578/root/chroot_tmpdir/scmroot/openjph'...
$ git fetch origin c0b26cf3eb1be7a13e09936e1dccec7b9decacf8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openjph
 * [new ref]         c0b26cf3eb1be7a13e09936e1dccec7b9decacf8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c0b26cf Update to 0.31.0