$ git clone -n https://src.fedoraproject.org/rpms/rust-tokio0.2.git /var/lib/mock/f39-build-1466203-33650/root/chroot_tmpdir/scmroot/rust-tokio0.2
Cloning into '/var/lib/mock/f39-build-1466203-33650/root/chroot_tmpdir/scmroot/rust-tokio0.2'...
$ git fetch origin c1fe38c224f8213acd7f97b3a18f5bedb317d3ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tokio0.2
 * [new ref]         c1fe38c224f8213acd7f97b3a18f5bedb317d3ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1fe38c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild