$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-chunk.git /var/lib/mock/f40-build-2036676-48050/root/chroot_tmpdir/scmroot/rust-gix-chunk
Cloning into '/var/lib/mock/f40-build-2036676-48050/root/chroot_tmpdir/scmroot/rust-gix-chunk'...
$ git fetch origin 7c8a52e29ca1c40c2f97ecbdd92b4277bfc16e2e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-chunk
 * [new ref]         7c8a52e29ca1c40c2f97ecbdd92b4277bfc16e2e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c8a52e Update to version 0.4.4; Fixes RHBZ#2224742