$ git clone -n https://src.fedoraproject.org/rpms/gnome-terminal.git /var/lib/mock/f42-build-side-1-3498405-45962/root/chroot_tmpdir/scmroot/gnome-terminal
Cloning into '/var/lib/mock/f42-build-side-1-3498405-45962/root/chroot_tmpdir/scmroot/gnome-terminal'...
$ git fetch origin 761b8429cb41af9ca88b9bd41f84c7ffac0dbc3e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-terminal
 * [new ref]         761b8429cb41af9ca88b9bd41f84c7ffac0dbc3e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 761b842 Update to 3.56.1