$ git clone -n https://src.fedoraproject.org/rpms/akonadi-contacts.git /var/lib/mock/f40-build-763545-122537/root/chroot_tmpdir/scmroot/akonadi-contacts
Cloning into '/var/lib/mock/f40-build-763545-122537/root/chroot_tmpdir/scmroot/akonadi-contacts'...
$ git fetch origin 9033af7ec91000b5f26c94331302e8c182c76b95:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/akonadi-contacts
 * [new ref]         9033af7ec91000b5f26c94331302e8c182c76b95 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9033af7 Obsolete kf5-akonadi-contacts