$ git clone -n https://src.fedoraproject.org/rpms/rust-lexical-util.git /var/lib/mock/f45-build-42886-797/root/chroot_tmpdir/scmroot/rust-lexical-util
Cloning into '/var/lib/mock/f45-build-42886-797/root/chroot_tmpdir/scmroot/rust-lexical-util'...
$ git fetch origin e30fd7f7518d6f67876d33746e90b5387ba29ee1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-lexical-util
 * [new ref]         e30fd7f7518d6f67876d33746e90b5387ba29ee1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e30fd7f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild