$ git clone -n https://src.fedoraproject.org/rpms/perl-Parse-RecDescent.git /var/lib/mock/f45-build-25706-612/root/chroot_tmpdir/scmroot/perl-Parse-RecDescent
Cloning into '/var/lib/mock/f45-build-25706-612/root/chroot_tmpdir/scmroot/perl-Parse-RecDescent'...
$ git fetch origin 9fb699d382def19ffcf71ad92029d8e62c6c47c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Parse-RecDescent
 * [new ref]         9fb699d382def19ffcf71ad92029d8e62c6c47c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9fb699d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild