$ git clone -n https://src.fedoraproject.org/rpms/rust-futf.git /var/lib/mock/f45-build-41752-785/root/chroot_tmpdir/scmroot/rust-futf
Cloning into '/var/lib/mock/f45-build-41752-785/root/chroot_tmpdir/scmroot/rust-futf'...
$ git fetch origin 9b9c457bc7c9af2dfd3c60c53eca022deed22978:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-futf
 * [new ref]         9b9c457bc7c9af2dfd3c60c53eca022deed22978 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b9c457 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild