$ git clone -n https://src.fedoraproject.org/rpms/rust-lzma-rs.git /var/lib/mock/f45-build-43093-800/root/chroot_tmpdir/scmroot/rust-lzma-rs
Cloning into '/var/lib/mock/f45-build-43093-800/root/chroot_tmpdir/scmroot/rust-lzma-rs'...
$ git fetch origin 7f289a8fb045a1ae1426f9aaec11d5687208edeb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-lzma-rs
 * [new ref]         7f289a8fb045a1ae1426f9aaec11d5687208edeb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f289a8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild