$ git clone -n https://src.fedoraproject.org/rpms/rust-fb_procfs0.7.git /var/lib/mock/f45-build-41600-784/root/chroot_tmpdir/scmroot/rust-fb_procfs0.7
Cloning into '/var/lib/mock/f45-build-41600-784/root/chroot_tmpdir/scmroot/rust-fb_procfs0.7'...
$ git fetch origin bc1228725073d03628db91202be130484eb85e74:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-fb_procfs0.7
 * [new ref]         bc1228725073d03628db91202be130484eb85e74 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc12287 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild