$ git clone -n https://src.fedoraproject.org/rpms/perl-Config-AutoConf.git /var/lib/mock/f45-build-22466-591/root/chroot_tmpdir/scmroot/perl-Config-AutoConf
Cloning into '/var/lib/mock/f45-build-22466-591/root/chroot_tmpdir/scmroot/perl-Config-AutoConf'...
$ git fetch origin 8ef1e933253a4a90b4d21c6a95b2ca0fe00b9dc0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Config-AutoConf
 * [new ref]         8ef1e933253a4a90b4d21c6a95b2ca0fe00b9dc0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ef1e93 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild