$ git clone -n https://src.fedoraproject.org/rpms/perl-Task-Kensho-Testing.git /var/lib/mock/f45-build-26496-617/root/chroot_tmpdir/scmroot/perl-Task-Kensho-Testing
Cloning into '/var/lib/mock/f45-build-26496-617/root/chroot_tmpdir/scmroot/perl-Task-Kensho-Testing'...
$ git fetch origin dce587a59426e0bb10bd7355ff994c545ac304dc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Task-Kensho-Testing
 * [new ref]         dce587a59426e0bb10bd7355ff994c545ac304dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dce587a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild