$ git clone -n https://src.fedoraproject.org/rpms/perl-LWP-Authen-Negotiate.git /var/lib/mock/f45-build-24381-603/root/chroot_tmpdir/scmroot/perl-LWP-Authen-Negotiate
Cloning into '/var/lib/mock/f45-build-24381-603/root/chroot_tmpdir/scmroot/perl-LWP-Authen-Negotiate'...
$ git fetch origin fb19b876129177e911e3a697ecba850acb688c87:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-LWP-Authen-Negotiate
 * [new ref]         fb19b876129177e911e3a697ecba850acb688c87 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb19b87 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild