$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode-width0.1.git /var/lib/mock/f45-build-45930-829/root/chroot_tmpdir/scmroot/rust-unicode-width0.1
Cloning into '/var/lib/mock/f45-build-45930-829/root/chroot_tmpdir/scmroot/rust-unicode-width0.1'...
$ git fetch origin ca994c314133097a9428a3bf26a788660ed600bd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode-width0.1
 * [new ref]         ca994c314133097a9428a3bf26a788660ed600bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca994c3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild