$ git clone -n https://src.fedoraproject.org/rpms/rust-cmov.git /var/lib/mock/f45-build-40853-776/root/chroot_tmpdir/scmroot/rust-cmov
Cloning into '/var/lib/mock/f45-build-40853-776/root/chroot_tmpdir/scmroot/rust-cmov'...
$ git fetch origin 3a7bd6a434aa3ba9fc8b1f6e8f9aa599a0e7a711:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cmov
 * [new ref]         3a7bd6a434aa3ba9fc8b1f6e8f9aa599a0e7a711 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a7bd6a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild