$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Dependencies.git /var/lib/mock/f45-build-26617-618/root/chroot_tmpdir/scmroot/perl-Test-Dependencies
Cloning into '/var/lib/mock/f45-build-26617-618/root/chroot_tmpdir/scmroot/perl-Test-Dependencies'...
$ git fetch origin c87bb1eaa8f849d5a53c151a648b4c0f5db98a08:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Dependencies
 * [new ref]         c87bb1eaa8f849d5a53c151a648b4c0f5db98a08 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c87bb1e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild