$ git clone -n https://src.fedoraproject.org/rpms/rust-num_enum.git /var/lib/mock/f38-build-side-43-rust-devel-1415320-31454/root/chroot_tmpdir/scmroot/rust-num_enum
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1415320-31454/root/chroot_tmpdir/scmroot/rust-num_enum'...
$ git fetch origin faa7d78fcc8601031b31f0465c346b7da6d99d0f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-num_enum
 * [new ref]         faa7d78fcc8601031b31f0465c346b7da6d99d0f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at faa7d78 Update to version 0.5.11; Fixes RHBZ#2170823