$ git clone -n https://src.fedoraproject.org/rpms/perl-Module-Install-Authority.git /var/lib/mock/f45-build-24823-606/root/chroot_tmpdir/scmroot/perl-Module-Install-Authority
Cloning into '/var/lib/mock/f45-build-24823-606/root/chroot_tmpdir/scmroot/perl-Module-Install-Authority'...
$ git fetch origin 54c7b970572128a8d843adf0dabd98b0ace0e8de:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Module-Install-Authority
 * [new ref]         54c7b970572128a8d843adf0dabd98b0ace0e8de -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 54c7b97 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild