$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_whoami.git /var/lib/mock/f41-build-810495-146724/root/chroot_tmpdir/scmroot/rust-uu_whoami
Cloning into '/var/lib/mock/f41-build-810495-146724/root/chroot_tmpdir/scmroot/rust-uu_whoami'...
$ git fetch origin 33a65841fd05c69fcd62cd74f7e497c64ec1d791:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_whoami
 * [new ref]         33a65841fd05c69fcd62cd74f7e497c64ec1d791 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 33a6584 Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces