$ git clone -n https://src.fedoraproject.org/rpms/rust-page_size.git /var/lib/mock/f45-build-43770-805/root/chroot_tmpdir/scmroot/rust-page_size
Cloning into '/var/lib/mock/f45-build-43770-805/root/chroot_tmpdir/scmroot/rust-page_size'...
$ git fetch origin f28c55b2671e7ae0f3e241436baa487fb9b1f6d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-page_size
 * [new ref]         f28c55b2671e7ae0f3e241436baa487fb9b1f6d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f28c55b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild