$ git clone -n https://src.fedoraproject.org/rpms/rust-associative-cache.git /var/lib/mock/f38-build-side-42-init-devel-755063-27676/root/chroot_tmpdir/scmroot/rust-associative-cache
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-755063-27676/root/chroot_tmpdir/scmroot/rust-associative-cache'...
$ git fetch origin 5af154fe14c1c396cb4470d3f456881e66b7c610:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-associative-cache
 * [new ref]         5af154fe14c1c396cb4470d3f456881e66b7c610 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5af154f Initial import (rhbz#2184004)