$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode-truncate.git /var/lib/mock/f45-build-45917-829/root/chroot_tmpdir/scmroot/rust-unicode-truncate
Cloning into '/var/lib/mock/f45-build-45917-829/root/chroot_tmpdir/scmroot/rust-unicode-truncate'...
$ git fetch origin a170696dba40267c3f8bc63bab8e34ef8fb349e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode-truncate
 * [new ref]         a170696dba40267c3f8bc63bab8e34ef8fb349e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a170696 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild