$ git clone -n https://src.fedoraproject.org/rpms/rust-async-compression.git /var/lib/mock/f41-build-side-1-2803292-32817/root/chroot_tmpdir/scmroot/rust-async-compression
Cloning into '/var/lib/mock/f41-build-side-1-2803292-32817/root/chroot_tmpdir/scmroot/rust-async-compression'...
$ git fetch origin 9801f115ee1e5650b441f34661dade09b886d3b9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-compression
 * [new ref]         9801f115ee1e5650b441f34661dade09b886d3b9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9801f11 Update to version 0.4.12; Fixes RHBZ#2273733