$ git clone -n https://src.fedoraproject.org/rpms/R-filelock.git /var/lib/mock/f45-build-6051-346/root/chroot_tmpdir/scmroot/R-filelock
Cloning into '/var/lib/mock/f45-build-6051-346/root/chroot_tmpdir/scmroot/R-filelock'...
$ git fetch origin 7b1ee2f385dc473d2b1b124cab6eced22a205342:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-filelock
 * [new ref]         7b1ee2f385dc473d2b1b124cab6eced22a205342 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b1ee2f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild