$ git clone -n https://src.fedoraproject.org/rpms/xfce4-terminal.git /var/lib/mock/f39-build-1577134-37955/root/chroot_tmpdir/scmroot/xfce4-terminal
Cloning into '/var/lib/mock/f39-build-1577134-37955/root/chroot_tmpdir/scmroot/xfce4-terminal'...
$ git fetch origin 286990b47ce333c13bf29390a701914cd2168f1e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xfce4-terminal
 * [new ref]         286990b47ce333c13bf29390a701914cd2168f1e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 286990b Update to v1.1.0