$ git clone -n https://src.fedoraproject.org/rpms/rust-colorful.git /var/lib/mock/f38-build-side-42-init-devel-1395743-31050/root/chroot_tmpdir/scmroot/rust-colorful
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1395743-31050/root/chroot_tmpdir/scmroot/rust-colorful'...
$ git fetch origin f54baa6679a9296b8b1216291a9cb1ed825bafea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-colorful
 * [new ref]         f54baa6679a9296b8b1216291a9cb1ed825bafea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f54baa6 Update to version 0.2.2; Fixes RHBZ#2156188