$ git clone -n https://src.fedoraproject.org/rpms/xapp-symbolic-icons.git /var/lib/mock/f45-build-38589-725/root/chroot_tmpdir/scmroot/xapp-symbolic-icons
Cloning into '/var/lib/mock/f45-build-38589-725/root/chroot_tmpdir/scmroot/xapp-symbolic-icons'...
$ git fetch origin e11f5ca87e55e3c566976727fc594779f5a53f7b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xapp-symbolic-icons
 * [new ref]         e11f5ca87e55e3c566976727fc594779f5a53f7b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e11f5ca Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild