$ git clone -n https://src.fedoraproject.org/rpms/perl-HTTP-Exception.git /var/lib/mock/f45-build-24017-601/root/chroot_tmpdir/scmroot/perl-HTTP-Exception
Cloning into '/var/lib/mock/f45-build-24017-601/root/chroot_tmpdir/scmroot/perl-HTTP-Exception'...
$ git fetch origin d1f3c9066d59cdeb2dcbfd070969e65962cd99f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-HTTP-Exception
 * [new ref]         d1f3c9066d59cdeb2dcbfd070969e65962cd99f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d1f3c90 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild