$ git clone -n https://src.fedoraproject.org/rpms/perl-Algorithm-CheckDigits.git /var/lib/mock/f45-build-21565-586/root/chroot_tmpdir/scmroot/perl-Algorithm-CheckDigits
Cloning into '/var/lib/mock/f45-build-21565-586/root/chroot_tmpdir/scmroot/perl-Algorithm-CheckDigits'...
$ git fetch origin a3aa4c0a6078e426e287d0f15dc9a408ee895273:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Algorithm-CheckDigits
 * [new ref]         a3aa4c0a6078e426e287d0f15dc9a408ee895273 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3aa4c0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild