$ git clone -n https://src.fedoraproject.org/rpms/rust-iocuddle.git /var/lib/mock/f45-build-42635-795/root/chroot_tmpdir/scmroot/rust-iocuddle
Cloning into '/var/lib/mock/f45-build-42635-795/root/chroot_tmpdir/scmroot/rust-iocuddle'...
$ git fetch origin 3dea4b4f73e13b792bd0f9befb5f999b2a66317e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-iocuddle
 * [new ref]         3dea4b4f73e13b792bd0f9befb5f999b2a66317e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3dea4b4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild