$ git clone -n https://src.fedoraproject.org/rpms/perl-Devel-Refactor.git /var/lib/mock/f45-build-23186-596/root/chroot_tmpdir/scmroot/perl-Devel-Refactor
Cloning into '/var/lib/mock/f45-build-23186-596/root/chroot_tmpdir/scmroot/perl-Devel-Refactor'...
$ git fetch origin 20a7a6879f4d5dc9a0b0d24324b3063a0e25ce02:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Devel-Refactor
 * [new ref]         20a7a6879f4d5dc9a0b0d24324b3063a0e25ce02 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20a7a68 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild