$ git clone -n https://src.fedoraproject.org/rpms/rust-clearscreen.git /var/lib/mock/f45-build-40831-776/root/chroot_tmpdir/scmroot/rust-clearscreen
Cloning into '/var/lib/mock/f45-build-40831-776/root/chroot_tmpdir/scmroot/rust-clearscreen'...
$ git fetch origin 80837c843dafebc616afd0eb335d78573fbdf55e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-clearscreen
 * [new ref]         80837c843dafebc616afd0eb335d78573fbdf55e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 80837c8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild