$ git clone -n https://src.fedoraproject.org/rpms/perl-Class-AutoClass.git /var/lib/mock/f45-build-22313-590/root/chroot_tmpdir/scmroot/perl-Class-AutoClass
Cloning into '/var/lib/mock/f45-build-22313-590/root/chroot_tmpdir/scmroot/perl-Class-AutoClass'...
$ git fetch origin 0db5c07cd40d22e5fd7e10d918a514080161f9f5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Class-AutoClass
 * [new ref]         0db5c07cd40d22e5fd7e10d918a514080161f9f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0db5c07 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild