$ git clone -n https://src.fedoraproject.org/rpms/rust-write16.git /var/lib/mock/f45-build-46232-832/root/chroot_tmpdir/scmroot/rust-write16
Cloning into '/var/lib/mock/f45-build-46232-832/root/chroot_tmpdir/scmroot/rust-write16'...
$ git fetch origin 01cc8a6dd4d177649d7643b74e053959498227c8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-write16
 * [new ref]         01cc8a6dd4d177649d7643b74e053959498227c8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 01cc8a6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild