$ git clone -n https://src.fedoraproject.org/rpms/python-epub.git /var/lib/mock/f39-build-1549356-36899/root/chroot_tmpdir/scmroot/python-epub
Cloning into '/var/lib/mock/f39-build-1549356-36899/root/chroot_tmpdir/scmroot/python-epub'...
$ git fetch origin ca18363fadb409b2823e5dbc5a575be65b36d83b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-epub
 * [new ref]         ca18363fadb409b2823e5dbc5a575be65b36d83b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca18363 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild