$ git clone -n https://src.fedoraproject.org/rpms/perl-Class-Inner.git /var/lib/mock/f45-build-22416-591/root/chroot_tmpdir/scmroot/perl-Class-Inner
Cloning into '/var/lib/mock/f45-build-22416-591/root/chroot_tmpdir/scmroot/perl-Class-Inner'...
$ git fetch origin d4680e9607eb12042d99b0a983442cd4500c32d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Class-Inner
 * [new ref]         d4680e9607eb12042d99b0a983442cd4500c32d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4680e9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild