$ git clone -n https://src.fedoraproject.org/rpms/perl-HTTP-Negotiate.git /var/lib/mock/f40-build-2018002-46369/root/chroot_tmpdir/scmroot/perl-HTTP-Negotiate
Cloning into '/var/lib/mock/f40-build-2018002-46369/root/chroot_tmpdir/scmroot/perl-HTTP-Negotiate'...
$ git fetch origin 039099b594ee127b99f756d9d9538e2b1e894c22:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-HTTP-Negotiate
 * [new ref]         039099b594ee127b99f756d9d9538e2b1e894c22 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 039099b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild