$ git clone -n https://src.fedoraproject.org/rpms/libmatheval.git /var/lib/mock/f45-build-16530-487/root/chroot_tmpdir/scmroot/libmatheval
Cloning into '/var/lib/mock/f45-build-16530-487/root/chroot_tmpdir/scmroot/libmatheval'...
$ git fetch origin d6b8a42ecab5b361ee2c1e4dd8d90726af7cdbb6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmatheval
 * [new ref]         d6b8a42ecab5b361ee2c1e4dd8d90726af7cdbb6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6b8a42 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild