$ git clone -n https://src.fedoraproject.org/rpms/rust-process_control.git /var/lib/mock/f39-build-1522337-35910/root/chroot_tmpdir/scmroot/rust-process_control
Cloning into '/var/lib/mock/f39-build-1522337-35910/root/chroot_tmpdir/scmroot/rust-process_control'...
$ git fetch origin 8c48f39df4c63b2f6d004ff801bd578f3cbd9618:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-process_control
 * [new ref]         8c48f39df4c63b2f6d004ff801bd578f3cbd9618 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c48f39 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild