$ git clone -n https://src.fedoraproject.org/rpms/rust-uucore_procs.git /var/lib/mock/f40-build-2040575-48366/root/chroot_tmpdir/scmroot/rust-uucore_procs
Cloning into '/var/lib/mock/f40-build-2040575-48366/root/chroot_tmpdir/scmroot/rust-uucore_procs'...
$ git fetch origin d13c2443bf664f1d27fa5b8844fe0e28614ea3bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uucore_procs
 * [new ref]         d13c2443bf664f1d27fa5b8844fe0e28614ea3bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d13c244 Regenerate with rust2rpm v24