$ git clone -n https://src.fedoraproject.org/rpms/rust-afterburn.git /var/lib/mock/f45-build-40014-767/root/chroot_tmpdir/scmroot/rust-afterburn
Cloning into '/var/lib/mock/f45-build-40014-767/root/chroot_tmpdir/scmroot/rust-afterburn'...
$ git fetch origin bac10e870670c738c90c8231e5bdaa77988a57c5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-afterburn
 * [new ref]         bac10e870670c738c90c8231e5bdaa77988a57c5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bac10e8 Update to 5.11.0 upstream release