$ git clone -n https://src.fedoraproject.org/rpms/libepubgen.git /var/lib/mock/f40-build-2603735-63347/root/chroot_tmpdir/scmroot/libepubgen
Cloning into '/var/lib/mock/f40-build-2603735-63347/root/chroot_tmpdir/scmroot/libepubgen'...
$ git fetch origin ad9e17d50e667a3329183d2b5e21a957091b1ca1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libepubgen
 * [new ref]         ad9e17d50e667a3329183d2b5e21a957091b1ca1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad9e17d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild