$ git clone -n https://src.fedoraproject.org/rpms/rust-clap_builder.git /var/lib/mock/f38-build-side-43-rust-devel-1397466-31052/root/chroot_tmpdir/scmroot/rust-clap_builder
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1397466-31052/root/chroot_tmpdir/scmroot/rust-clap_builder'...
$ git fetch origin 27335dac4fc4ffa16684288d3f66a0cf99c0dd52:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-clap_builder
 * [new ref]         27335dac4fc4ffa16684288d3f66a0cf99c0dd52 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 27335da Update to version 4.4.4; Fixes RHBZ#2229852