$ git clone -n https://src.fedoraproject.org/rpms/rust-threadpool.git /var/lib/mock/f45-build-45468-823/root/chroot_tmpdir/scmroot/rust-threadpool
Cloning into '/var/lib/mock/f45-build-45468-823/root/chroot_tmpdir/scmroot/rust-threadpool'...
$ git fetch origin 0c146cd339a037cc3822b7be521fb2774385a127:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-threadpool
 * [new ref]         0c146cd339a037cc3822b7be521fb2774385a127 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0c146cd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild