$ git clone -n https://src.fedoraproject.org/rpms/perl-Cookie-Baker.git /var/lib/mock/f45-build-22577-593/root/chroot_tmpdir/scmroot/perl-Cookie-Baker
Cloning into '/var/lib/mock/f45-build-22577-593/root/chroot_tmpdir/scmroot/perl-Cookie-Baker'...
$ git fetch origin d9d6ae3567fef204ce6a9cf066592773d54d1dde:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Cookie-Baker
 * [new ref]         d9d6ae3567fef204ce6a9cf066592773d54d1dde -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9d6ae3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild