$ git clone -n https://src.fedoraproject.org/rpms/perl-DateTime-Set.git /var/lib/mock/f40-build-2303369-56947/root/chroot_tmpdir/scmroot/perl-DateTime-Set
Cloning into '/var/lib/mock/f40-build-2303369-56947/root/chroot_tmpdir/scmroot/perl-DateTime-Set'...
$ git fetch origin fcf7f0fd8a3b632dbb21df4e91a0bd27f5fac20a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DateTime-Set
 * [new ref]         fcf7f0fd8a3b632dbb21df4e91a0bd27f5fac20a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fcf7f0f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild