$ git clone -n https://src.fedoraproject.org/rpms/rust-harfbuzz-traits.git /var/lib/mock/f45-build-42288-792/root/chroot_tmpdir/scmroot/rust-harfbuzz-traits
Cloning into '/var/lib/mock/f45-build-42288-792/root/chroot_tmpdir/scmroot/rust-harfbuzz-traits'...
$ git fetch origin 1903ad3d3f3c4d848d8128ab389042ee40c56f7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-harfbuzz-traits
 * [new ref]         1903ad3d3f3c4d848d8128ab389042ee40c56f7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1903ad3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild