$ git clone -n https://src.fedoraproject.org/rpms/ebook-tools.git /var/lib/mock/f45-build-7889-371/root/chroot_tmpdir/scmroot/ebook-tools
Cloning into '/var/lib/mock/f45-build-7889-371/root/chroot_tmpdir/scmroot/ebook-tools'...
$ git fetch origin 4c3f0cbaa818103e4dcab3b35986e8fcd3e083df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ebook-tools
 * [new ref]         4c3f0cbaa818103e4dcab3b35986e8fcd3e083df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c3f0cb Fix F45FTBFS