$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode-truncate1.git /var/lib/mock/f45-build-45916-829/root/chroot_tmpdir/scmroot/rust-unicode-truncate1
Cloning into '/var/lib/mock/f45-build-45916-829/root/chroot_tmpdir/scmroot/rust-unicode-truncate1'...
$ git fetch origin 780962767b8dce88bd9d20e62eacd58619ac9e22:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode-truncate1
 * [new ref]         780962767b8dce88bd9d20e62eacd58619ac9e22 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7809627 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild