$ git clone -n https://src.fedoraproject.org/rpms/rust-parsec-client.git /var/lib/mock/f40-build-2667079-67142/root/chroot_tmpdir/scmroot/rust-parsec-client
Cloning into '/var/lib/mock/f40-build-2667079-67142/root/chroot_tmpdir/scmroot/rust-parsec-client'...
$ git fetch origin 2a1990db2dd6fee6e914a689c9d60837afebcd4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-parsec-client
 * [new ref]         2a1990db2dd6fee6e914a689c9d60837afebcd4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2a1990d Update to 0.16.0