$ git clone -n https://src.fedoraproject.org/rpms/kaddressbook.git /var/lib/mock/f45-build-14528-461/root/chroot_tmpdir/scmroot/kaddressbook
Cloning into '/var/lib/mock/f45-build-14528-461/root/chroot_tmpdir/scmroot/kaddressbook'...
$ git fetch origin ae381cfdb6a1799294bff0e0471920a9be223988:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kaddressbook
 * [new ref]         ae381cfdb6a1799294bff0e0471920a9be223988 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae381cf 26.08.1