$ git clone -n https://src.fedoraproject.org/rpms/libkiwix.git /var/lib/mock/f45-build-16444-486/root/chroot_tmpdir/scmroot/libkiwix
Cloning into '/var/lib/mock/f45-build-16444-486/root/chroot_tmpdir/scmroot/libkiwix'...
$ git fetch origin 62fcee8d3df6a38e95caff496bdfb32a586d7db9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkiwix
 * [new ref]         62fcee8d3df6a38e95caff496bdfb32a586d7db9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62fcee8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild